At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
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⏺ Superb BAT custom actions, over 80 on sale at $100 Off
BAT actions have an amazing reputation and are available in more configurations that just about any other action on the market. Head over to 灯蓝专业版免费安卓 and choose from over 80 lanter 专业版安卓破解版. Many models are avaiable, all discounted $100 off Bruno’s normal pricing. This BAT promo gets you $100 closer to that elite custom rifle you’ve always wanted.
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⏺ Great deal on hunting rifles with Vortex Scope, 6.5CM, .308 Win, .243 Win
Sportsman’s Warehouse is running a special on Ruger rifles with Vortex scopes. For $539.99 you can get this Ruger American in 6.5 Creedmoor topped with a Vortex Crossfire II 3-9x40mm scope with Dead-Hold BDC reticle. For the same $539.99 price you can also get this rifle in .308 Win, or .243 Win, also scope-equipped. This is a very good option if you are looking for an affordable hunting rig, ready to go.
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⏺ Super-low prices on scopes for PRS, Hunting, and Tactical
Maybe you’re in the market for a new scope for your AR or perhaps you’d like more magnification for your long-range rig. No matter what you’re in the market for, EuroOptic is running a huge Vortex Clearance Sale on scopes ranging from 1-4x24mm up to 6-24x50mm all at crazy low prices. If you’re planning a future build, you may want to grab one of these scopes now — the prices are exceptional.
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⏺ High BC A-Tips, wide selection of calibers
Hornady A-Tip bullets has started to earn a place on the line as more and more people are learning how to load and shoot them. As a result stock levels have been spotty at best in popular calibers. At Graf & Sons, we found a full selection of Hornady A-Tip bullets, including hard-to-find bullet weights. If you’ve been interested in trying A-Tips, grab these before they sell out.
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⏺ Truly superb Benchrest match trigger or get Dakota Trigger for $195.00
Having a light and reliable trigger is critical to success in many disciplines. The Bix’n Andy Rem700 Benchrest Trigger is one of the best out there. With its easy-to-change pull weight and a ultra-crisp break it’s the choice of many competition shooters. If you’re looking for something with a slightly heavier pull at a much lower price, check out the $195.00 Dakota Trigger.
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⏺ Versatile, stable, works with all rifles, including ARs
You need a stable platform at home for your gun when clealing, and most gun vises are too light or unstable to do the job properly. If you’re looking upgrade to a better solution than what you have, grab the Tipton Best Gun Vise. The vise was designed to accommodate the widest possible array of firearms for cleaning, maintenance, or gunsmithing, and is easily configurable to handle bolt-action rifles, break-open shotguns, AR-15s, and handguns. You can also purchase this excellent Gun Vise for $89.99 at Midsouth Shooters, also a good deal.
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⏺ Great unit holds gear and has cradles for cleaning
Whether heading to the range or a weeklong competition, having all your cleaning gear in one easy-to-use place is critical. Enter the MTM Shooting Range Box. This will hold solvents, jags, brushes, patches, guide rods, and tools. PLUS this unit has cradles to support your rifle. This Editor has been using the MTM Range Box for years and wouldn’t dream of attending a match without it. Order now from MidwayUSA for $47.99, or back-order from Midsouth Shooters for $41.16.
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⏺ Activates when door opens, Rechargeable, 3 LED Light Levels
Here’s a great accessory for your Gun Safe or closet. This rechargeable LED lamp turns itself on when you open the door, and off when you close the door. Select three brightness levels: 10LED, 20LED, 30LED. With the supplied 3M adhesive magnetic strip you can easily attach the light to the inner walls of your gun safe. And then quickly remove the unit for charging with a standard USB cord (no batteries to replace!). It works, it’s handy, and it’s inexpensive — just $15.99 on Amazon. These motion-sensor LED lamps can also be used in garages or stairwells. NOTE: this is Amazon’s choice for rechargeable LED Motion-Sensor lights.
Bore cleaning is critical for rifle longevity and accuracy. But you need a good bore guide to avoid potential damage to your chamber and bore. This handy 灯蓝永久免费加速器分享 ships with multiple chamber adapters. Three tapered tips are included (small fits calibers .17-.24, medium fits most calibers .25-.30, and large fits most calibers over .30). This Universal Bore Guide includes an action collar for AR rifles.
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August 3rd, 2023
Yes You Need to Clean Muzzle Brakes — Here’s How to Do It
Many hunters and precision rifle competitors use muzzle brakes because these ported devices reduce felt recoil significantly. That make s real difference getting back on target for quick follow-up shots. While many rifle owners appreciate the benefits of muzzle brakes, they may also neglect their brakes, allowing hard carbon and powder residue to build up. Not good. You should regularly clean your muzzle brake to remove fouling and carbon build-up.
As Mark Edgreen posted: “Carbon build up on the crown and in the brake is a recipe for poor accuracy.” And another gunsmith reported that customers complained about guns that “shot out way too early” but they only needed to have the brakes cleaned.
Gunsmith and PRS/NRL competitor Jim See recently reminded his Facebook Fans about the importance of cleaning muzzle brakes: “How many times do I have to say it? You need to maintain your rifles. Clean your muzzle brakes people!”. Jim, who runs 灯蓝app下载, notes that hard carbon build-up in brakes can definitely harm accuracy. Look at this example:
Muzzle Brake Cleaning Methods
There are various methods for cleaning a brake, we list a variety of techniques, but we would start with NON-corrosive ultrasound. You’ll want to remove the muzzle device before doing these tasks.
4. Soak in 50/50 solution of water and white vinegar and brush. (Be sure to apply anti-corrosion coating, such as Eezox, after soaking).
5. Tumble in liquid solution with stainless pins. Comment: “Comes out slightly faded, but perfectly clean on stainless, non-painted brakes though.” Warning — do NOT do this with threaded brakes — tumbling could affect threads of screw-on brakes. Also, tumbling can harm painted or Cerakote finishes.
Gunsmithing Tip: By fitting the muzzle brake so that the barrel crown is slightly forward, it is easier to wipe carbon fouling off the end of the barrel. See photo:
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Free Target & Gear Giveaways for Nat’l Shooting Sports Month
August is National Shooting Sports Month. The goal this month is to celebrate the fun and challenge of shooting, AND, most importantly, to introduce new shooters to the sport. The NSSF encourages all experienced firearm owners to invite a new shooter to the range this month. At the range, act as a mentor for the new person, teaching him or her about safety and the various shooting disciplines he/she can try.
To encourage new shooters, the NSSF has created a special target. With this fun target, you shot five bulleyes, with three different scoring challenges. Download printable PDF targets with the links below.
DOWNLOAD 8.5″x11″ TARGET HERE | DOWNLOAD 11″x17″ TARGET HERE
Win Valuable Prizes with +ONE Gear Giveaway Contest
To promote National Shooting Sports Month, the NSSF is running a +ONE Gear Giveaway contest. You can enter to win one of an impressive collection of +ONE GEARBOX prize packages. These prize collections include rifles, pistols, shotguns, RCBS presses, carry cases, tools, hearing protection, support bags, steel targets, ultrasonic machines, clothing, and more. Guns come from SIG Sauer, Mossberg, Glock, and Primary Arms. Check out the Gear Giveaways below. IMPORTANT: You have to enter separately for each prize package. CLICK HERE to ENTER Gear Drawings.
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Sunday GunBlast Gunday: Tribute to Jeff Quinn, Gunblast Founder
Jeff Quinn, founder of GunBlast.com, was a good-hearted, southern country boy who loved firearms. Sadly he passed away on July 27, 2023. He will be missed. His reviews were always honest and thoughtful. Notably, Jeff was a true internet pioneer. With help from his brother Boge Quinn, Jeff created Gunblast.com back in 2000. He was one of the first independent writers publishing gun reviews on the internet. And he also was one of the very first to release gun test videos on YouTube. Over the past two decades the Lantern官方 has racked up over 64 million views. Jeff Quinn led the way for popular YouTube video hosts such as 22Plinkster and Hickok 45.
This Sunday Gunday, to mark Jeff’s passing and recognize his influence in the world of firearms videos, we are reprising six of his videos from the past decade. There are a wide selection here — both rifles and pistols, rimfire and centerfire. We’ve even included a special video where Jeff tests a pre-WWI era Maxim machine gun.
The Patriot — Accurate .22-250 AI Benchrest Rifle
While Jeff Quinn focused on factory handguns, hunting rifles, and defensive shotguns, he did occasionally sample accurate custom rifles. Here he tested a unique “Patriot” .22-250 AI rig built on a sleeved Remington 700 action. This handsome rifle boasts a custom-painted, thumbhole benchrest stock with a stars-and-stripes motif. One side says “In God We Trust”, while the other side carries the message “The Right to Keep and Bear Arms”. This “Patriot” rifle delivered three-shot ragged-hole groups at 100 yards.
Tales from the Vault — Winchester 1895 Lever Gun
Along with his regular field tests, Jeff hosted videos that focused on the historical heritage of some of his favorite firearms. In the “Tales from the Vault” episode, Jeff showcases a prized example from his personal gun collection. This is an original Winchester Model 1895 lever-action rifle chambered in 30 Army, also known as 30-40 Krag.
Smith & Wesson Performance Center M629 .44 Magnum
Smith & Wesson builds some of the best wheelguns on the planet, and Performance Center models are the top of the S&W lineup. This Editor owns two S&W Performance Center revolvers, and they are both outstanding, with great triggers and accuracy that puts most semi-auto handguns to shame. In this video, Jeff Quinn tests a Performance Center six-shot Model 629 Hunter Revolver with a 8 3/8″ fluted barrel. S&W includes a Weaver-type optics rail with this capable wheelgun.
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The Savage model A17 delayed-blowback semi-auto in .17 HMR is one of our favorite budget varmint rifles. It is affordable, reliable, and surprisingly accurate with good .17 HMR ammo. Here Jeff Quinn tests the basic A17. We like the upgraded version with a laminated thumbhole stock, shown below. But both versions utilize the same well-designed action. This is a good choice for small varmints, such as ground squirrels, out to 200 yards.
Ruger GP100 .22 LR 10-Shot Revolver
We believe every gun enthusiast should have a good rimfire revolver, and Jeff Quinn would concur. The small size of the .22 LR cartridge allows modern wheelguns to have 10-round cylinder capacity. That’s great for target shooting, fun plinking, and gun games. Here Jeff reviews the sturdy .22 LR GP100 from Ruger. Jeff says this pistol offers “a good tight barrel/cylinder gap” and “positive ejection that kicks spent cases out really well.” He noted that this pistol was “amazingly accurate”. He tested 9 different ammo types and got 1.5″ average TEN-shot groups at 25 yards. (See video at 2:40 for targets.)
BONUS Video — Maxim Machine Gun (1914 Vintage)
The Maxim machine gun was one of the earliest successful fully-automatic weapons. Many of its revolutionary design features are still used in modern machine guns. Here Jeff Quinn tests a belt-fed, wheeled-carriage Maxim with Joe Meaux of Aklys Defense from Aklys Defense.
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Expanding Cartridge Brass in Stages with Progressive Press
Photos from DJ’s Brass Service.
Have you ever expanded a .22 or 6mm cartridge all the way up to .30-caliber? If so, you know this can be a difficult procedure that stresses the case necks and neck-shoulder junction. A significant neck-size expansion done in one big jump can increase run-out, cause doughnuts, or worse yet, even split the brass. Therefore you want to proceed in increments, increasing the neck diameter in stages. One smart way to do that is to use a Progressive Press. This article explains how…
The most successful short-range brenchrest-for-score cartridge is the 30 BR. That cartridge, as well as 30 BR variants such as the 30 BRX, all start with the 6mmBR Norma parent cartridge, typically with Lapua 6mmBR brass. To get a nice 30 BR case you want to expand in stages, increasing the inside neck diameter incrementally from .243 to .308.
Darrell Jones of 灯蓝app下载 creates thousands of 30 BR cases each year. He has found a clever way to speed up the process — Darrell uses a Progressive Press. He runs his 6BR brass through four (4) separate Hornady neck-sizing dies with expander mandrels. First there is a .257 die, followed by .264 (6.5mm), .284 (7mm), and then .308. Then a fifth and final K&M die provides one last, slight expansion so the newly-fashioned 30 BR cases perfectly fit the arbor of Darrell’s neck-turning tool.
So to repeat, the case starts as .243 (6mm), then moves in up stages .257, .264, .284, and .308, with a final “finishing” step prior to neck-turning. You can see the expansion in this video, which starts with 6mmBR brass that was first hydro-formed to 6 BRX:
Watch 6mm Cases Expanded to 30-Caliber (6BRX to 30 BRX)
For this demo video, Darrell expands just one case at a time. However, he can also put multiple cases in the progressive — one per station. This takes a little more effort, Darrell says, but the results are still excellent. Darrell tells us: “I do put multiple cases in the progressive to save time. The results are the same — I just wanted to show a single-step process and how it reduces run-out by not stressing the shoulder with one big expansion from 6mm straight to 30 caliber. Doing the operation in multiple stages avoids binds and helps keep the shoulders concentric.”
This same multi-stage procedure can be use to expand other cartridge types. For example you could take .221 Fireball brass in stages up to .308 to create 300 Blackout brass.
Darrell uses caliber-specific, Hornady neck-sizing-only dies with elliptical expanders. Darrell tells us: “The Hornady elliptical expander has a reduced bearing surface that puts less strain on the brass when expanding the necks to the next size.” The fitting at the bottom of the die is the Lock-N-Load die bushing that allows fast die changes.
These particular cases used in the video were first hydro-formed to 6BRX then expanded to 30 BRX before neck turning. DJ’s Brass offers hydro-forming for many popular wildcat cartridges such as 6 PPC, 6mm Dasher, and .284 Shehane.
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August 2nd, 2023
Parallax Defined and How to Use Your Parallax Control Properly
PARALLAX – What is it and Why is it important?
What is Parallax?
Parallax is the apparent movement of the scope’s reticle (cross-hairs) in relation to the target as the shooter moves his eye across the exit pupil of the riflescope. This is caused by the target and the reticle being located in different focal planes.
Why is it Important?
The greater the distance to the target and magnification of the optic, the greater the parallax error becomes. Especially at longer distances, significant sighting error can result if parallax is not removed.
How to Remove Parallax
This Nightforce Tech Tip video quickly shows how to remove parallax on your riflescope.
While keeping the rifle still and looking through the riflescope, a slight nod of the head up and down will quickly determine if parallax is present. To remove parallax, start with the adjustment mechanism on infinity and rotate until the reticle remains stationary in relation to the target regardless of head movement. If parallax has been eliminated, the reticle will remain stationary in relation to the target regardless of eye placement behind the optic.
This Parallax Discussion first appeared in the 下载灯蓝专业版免费.
Above is a 26-year-old hand-loaded .300 Winchester Magnum case that failed to fire. After the misfire, the shooter used an inertial (impact) bullet puller to pull the bullet. In the process the case-neck sheared off.
Here’s a cautionary tale from the Tactical Rifle Shooters Facebook group. This real-world example explains why you should be cautious of old ammunition. Here serious internal corrosion was discovered.
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The subject often comes up as to whether it is safe to shoot old ammunition. Historically my answer has always been yes, since over the years I have shot military surplus ammo dating back to World War II (1939-1945) and never had a problem. With over 40 years in competitive shooting, I’ve also had boxes of factory ammo that were 30+ years old and all worked flawlessly.
But I had an interesting experience this week shooting some .300 Winchester Magnum (WinMag) that I had loaded for competition with Reloder 22 back in 1993. I was breaking in a new barrel so just shooting any old ammo that I had. Of the 20 rounds, 15 shot perfectly, three had a fraction of a second hang-fire, and two didn’t shoot at all.
SMART TIP: If you have old ammunition, pull one bullet to see what’s going on inside.
So I pulled the bullets using a hammer-type impact (inertial) bullet puller. What I found was verdigris-like corrosion inside the necks, with one neck completely separating. One reason for this could be that dissimilar metals (copper and brass) can set up a reaction resulting in corrosion. Like I said, this is the first time I’ve seen this, but will definitely be more aware when shooting old hand-loads in the future.
Above is one of the 26-year-old reloaded .300 WinMag cartridges which had failed to fire. To check the internal condition, the bullet was removed using an impact (inertial) bullet puller. Note the verdigris-like corrosion and crack in neck.
Here’s a close-up of the same .300 Winchester Magnum hand-load from 1993 showing serious corrosion inside the neck. (This was a fail-to-fire.) The powder was Alliant Reloder 22. If you have old ammo, it wouldn’t hurt to pull one bullet to see what’s going on inside.
CREDIT 灯蓝永久免费加速器分享 Facebook Group for this Ammo Tech Tip and photos.
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August 1st, 2023
“Aim Small, Miss Small” with Decreasing Size Targets
In the hit Hollywood movie “The Patriot”, the hero Benjamin Martin (played by Mel Gibson), tells his sons: “Aim small, miss small”. That advice was given to help his sons survive encounters with the British redcoats, but the “aim small, miss small” mantra can benefit target shooters as well.
We have found that novice and intermediate shooters can often improve their accuracy simply by using targets with smaller, more precise aiming points. Inexperienced shooters can benefit by starting with a large-size aiming circle, and then progressing to smaller and smaller target dots. This lets the shooter increase the challenge as his gun-handling becomes more steady and his aim improves.
Here are two rimfire training targets with “big to small” target circles. Start with the largest circles, then move to the smaller ones in sequence. This systematic drill provides increasing challenge shot-by-shot. Novices often are quite surprised to see their accuracy improve as they move from bigger to smaller aiming points. That provides positive feedback — always a good thing.
Right Click and “Save as” to download printable PDF versions of target.
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August 1st, 2023
Young People Nationwide Compete in SASP Nat’l Championship
The sound of bullets ringing steel were heard all over the country over a three week period in July, during the 2023 Scholastic Action Shooting Program (SASP) National Virtual Championship. Over 248,000 rounds were sent down range as SASP athletes competed from their home ranges around the country. Photo and match results were posted on social media. Scores were then tallied and compared among hundreds of entrants. The ability to compete at Nationals from their home range gave teams all over the country the opportunity to finish the season as a team, competing for the national title.
Just last year, the SASP National Championship surpassed the Glock Shooting Sports Foundation (GSSF), to become the largest Action Shooting Match in history. Despite a heavily altered 2023 season, the SASP community continued to break records for participation with 1,656 event entries for the 2023 SASP National Championship.
“Virtual” Championship Held at Multiple Locations throughout the USA
Traditionally held at the Cardinal Shooting Center in Marengo, Ohio, the 2023 SASP Nationals were instead conducted in a multi-location “virtual” format. This arrangement was made “in order to protect the safety of our athletes, coaches, and familie” according to SASP National Director, Rick Leach. “The nature of our sport puts athletes and range officers in close proximity, which we could not in good conscious do with thousands of athletes in Ohio this year. We received hundreds of photos and videos from teams competing in Nationals from their home range.”
You can see SASP 2023 National Championships Results online. Just select the firearm category and class of shooters. For example, here are Centerfire Pistol Men’s results for all categories. Click image to zoom.
“This year we saw participation grow to states that are not always able to make the journey to Ohio each year for Nationals,” said SASP Director of Development, Kelvin Walton. “Although the spectacle of teams converging on the Cardinal Center to compete is part of the Nationals experience, the SASP community made the most out of an unusual season.”
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Grip on Bullet — Many Factors Involved, Not Just Bushing Size
Many novice hand-loaders believe that neck bushing Inside Diameter (ID) size is the only important factor in neck tension. In fact, many different things will influence the grip on your bullet and its ability to release from the case neck. To learn more about neck tension and “case grip”, take the time to read this article carefully. We bet you’ll gain knowledge that will let you load more accurate ammo, with better ES/SD.
Editor: Guys, this is a VERY important article. You really should read it over carefully, twice. Variations in the force required to release a bullet can significantly affect accuracy and ES/SD. You really need to know how the grip on bullet can be altered by many different factors.
Neck Tension (i.e. Grip on Bullets) Is a Complex Phenomenon
While we certainly have considerable control over neck tension by using tighter or looser bushings (with smaller or bigger Inside Diameters), bushing size is only one factor at work. It’s important to understand the multiple factors that can increase or decrease the resistance to bullet release. Think in terms of overall brass-on-bullet “grip” instead of just bushing size (or the internal neck diameter in non-bushing full-length sizing dies).
Bullet grip is affected by many things, such as:
1. Neck-wall thickness.
2. Amount of bullet bearing surface (shank) in the neck.
3. Surface condition inside of neck (residual carbon can act as a lubricant; ultrasonic cleaning makes necks “grabby”).
4. Length of neck (e.g. 6mmBR neck vs. 6mm Dasher).
5. Whether or not the bullets have an anti-friction coating.
6.The springiness of the brass (which is related to degree of work-hardening; number of firings etc.)
7. The bullet jacket material.
8. The outside diameter of the bullet and whether it has a pressure ridge.
9. Time duration between bullet seating and firing (necks can stiffen with time).
10. How often the brass is annealed.
11. Amount (length) of neck sized (e.g. you can size only half the neck).
12. Interior diameter of bushing, or neck section of non-bushing die.
– and there are others…
One needs to understand that bushing size isn’t the beginning and end of neck tension questions, because, even if bushing size is held constant, the amount of E变伋理_动态IP软件_IP伋理_加速器_安徽圣高网络科技有限公司:安徽圣高网络科技有限公司提供,E变伋理,ip加速器,动态IP软件,全国258城市+8千万IP库,自动秒换IP地址,动态IP拨号服务器,满足 .... Bullet “grip” can also change if you alter your seating depth, and it can even change if you ultrasonically clean your cases.
In our 灯蓝专业版免费安卓 a reader recently asked: “How much neck tension should I use?” This prompted a 下载灯蓝专业版免费 in which other Forum members recommended a specific number based on their experience, such as .001″, .002″, or .003″. These numbers, as commonly used, correspond to the difference between case-neck OD after sizing and the neck OD of a loaded round, with bullet in place. In other words, the numbers refer to the nominal amount of interference fit (after sizing).
While these commonly-used “tension numbers” (of .001″, .002″ etc.) can be useful as starting points, neck tension is actually a fairly complex subject. The actual amount of “grip” on the bullet is a function of many factors, of which neck-OD reduction during sizing is just one. Understanding these many factors will help you maintain consistent neck tension as your brass “evolves” over the course of multiple reloadings.
Seating Depth Changes Can Increase or Decrease Grip on Bullet
You can do this simple experiment. Seat a boat-tail bullet in your sized neck with .150″ of bearing surface (shank) in the neck. Now remove the bullet with an impact hammer. Next, take another identical bullet and seat it with .300″ of bearing surface in another sized case (same bushing size/same nominal tension). You’ll find the deeper-seated bullet is gripped much harder.
Neck-Wall Thickness is Important Too
I have also found that thinner necks, particularly the very thin necks used by many PPC shooters, require more sizing to give equivalent “grip”. Again, do your own experiment. Seat a bullet in a case turned to .008″ neckwall thickness and sized down .003″. Now compare that to a case with .014″ neckwall thickness and sized down .0015″. You may find that the bullet in the thin necks actually pulls out easier, though it supposedly has more “neck tension”, if one were to consider bushing size alone.
In practical terms, because thick necks are less elastic than very thin necks, when you turn necks you may need to run tighter bushings to maintain the same amount of actual grip on the bullets (as compared to no-turn brass). Consequently, I suspect the guys using .0015″ “tension” on no-turn brass may be a lot closer to the guys using .003″ “tension” on turned necks than either group may realize.
Toward a Better Definition of Neck Tension
As a convenient short-cut, we tend to describe neck tension by bushing size alone. When a guy says, “I run .002 neck tension”, that normally means he is using a die/bushing that sizes the necks .002″ smaller than a loaded round. Well we know something about his post-sizing neck OD, but do we really have a reliable idea about how much force is required to release his bullets? Maybe not… This use of the term “neck tension” when we are really only describing the amount of neck diameter reduction with a die/bushing is really kind of incomplete.
My point here is that it is overly simplistic to ask, “should I load with .001 tension or .003?” In reality, an .001″ reduction (after springback) on a thick neck might provide MORE “grip” on a deep-seated bullet than an .003″ reduction on a very thin-walled neck holding a bullet with minimal bearing surface in the neck. Bushing ID is something we can easily measure and verify. We use bushing size as a descriptor of neck tension because it is convenient and because the other important factors are hard to quantify. But those factors shouldn’t be ignored if you want to maintain consistent neck tension for optimal accuracy.
Consistency and accuracy — that’s really what this all about isn’t it? We want to find the best neck tension for accuracy, and then maintain that amount of grip-on-bullet over time. To do that you need to look not only at your bushing size, but also at how your brass has changed (work-hardened) with time, and whether other variables (such as the amount of carbon in the neck) have changed. Ultimately, optimal neck tension must be ascertained experimentally. You have to go out and test empirically to see what works, in YOUR rifle, with YOUR bullets and YOUR brass. And you may have to change the nominal tension setting (i.e. bushing size) as your brass work-hardens or IF YOU CHANGE SEATING DEPTHS.
Remember that bushing size alone does not tell us all we need to know about the neck’s true “holding power” on a bullet, or the energy required for bullet release. True bullet grip is a more complicated phenomenon, one that is affected by numerous factors, some of which are very hard to quantify.
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July 31st, 2023
Vortex Diamondback HD — New Affordable Spotting Scopes
Vortex’s new Diamondback® HD series of spotting scopes offer impressive performance for the price. While you can spend $2500 or more for a premium Fluorite Glass spotter, Vortex’s new HD spotting scopes cost $500-$600 MSRP. These new Diamondback spotters could be affordable options for competitive shooters and hunters. The Diamondback HD line of spotting scopes include both angled and straight body types in 16-48x65mm and 20-60x85mm configurations.
The new Diamondback HD spotters employ an HD optical system with multi-coated lenses. Vortex claims these spotters offer greater light transmission, reduced chromatic aberration, better color fidelity, and enhanced sharpness. Vortex says the “crisp resolution, brighter images, and edge-to-edge sharpness [can reduce] eye strain during long glassing sessions.” We hope to test the 20-60x85mm model to confirm these claims. HD glass should deliver greater low-light performance and clarity.
These new Diamondback HD models boast design upgrades to make them more like Vortex’s higher-end Viper HD Spotting Scopes (which start at $1049.99 MSRP). The big change is the new full-diameter focus ring as you would see on a Swarovski spotter. Vortex says: “[We] took a fresh approach to the spotter’s exterior, introducing a streamlined, snag-free profile. The helical focus wheel provides fast, fine adjustments, and an Arca-Swiss compatible foot means the Diamondback® HD mounts quickly to compatible tripod heads without additional plates. Plus, a neoprene cover comes included, keeping your spotter protected in the field.” The video below reviews the main design features of the new spotters:
Which model should you choose? The 16-48x65mm ($499.99 MSRP) is smaller and lighter, making it easier to pack or move around the firing line. The angled 16-48X spotter OAL is 14.25″ and weight is 49.8 oz., making this a good choice for competition shooters looking for an affordable spotter to watch mirage and shot markers. For hunters and other shooters seeking enhanced low-light performance and magnification, the 20-60x85mm ($599.99 MSRP) offers more light-gathering for just $100.00 more. OAL is 16.0″ and weight is 60.9 oz., about 3/4 pound heavier than its smaller brother. You make the choice.
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July 31st, 2023
Democrat Party Platform Includes Radical Anti-Firearms Policies
Presumed Democratic presidential nominee, Joe Biden, called the firearm industry “the enemy” from the debate stage one year ago. Now the Democratic Party’s Official Platform lays out an agenda to dismantle the firearm and ammunition industry and destroy Second Amendment rights in America.
How do the Democrats plan to attack your gun rights? CLICK HERE to find out. The Democratic National Committee (DNC) posted the party’s draft platform online. This platform will be formally adopted during the Democratic convention in Milwaukee in mid-August. Just two paragraphs of the 80-page document are dedicated to firearms, but the message is clear. The DNC Draft Platform includes:
Halting and criminalizing online firearm and ammunition sales
Forcing states to require licenses for owning any firearms
Banning the manufacture and sale of 10+ Rd capacity magazines
Enacting ex parte “red flag” laws to seize guns without legal recourse
Mandating home storage requirements under penalty of law
Repealing the Protection of Lawful Commerce in Arms Act
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The right to “keep and bear arms” is a fundamental right recognized by the Second Amendment of the U.S. Constitution. However, the Democrats want to restrict Second Amendment freedoms by requiring that all Americans first obtain a license before being allowed to purchase any firearms. This licensing scheme would be carried out by incentivizing “states to enact licensing requirements to own firearms[.]
Ban and Confiscate ARs and other Modern Sporting Rifles
The DNC platform contemplates the confiscation of modern sporting rifles. Biden has told voters he would appoint former U.S. Rep. Robert Francis “Beto” O’Rourke as his gun control sheriff, after O’Rourke said “Hell, yes…” to forcibly confiscating modern sporting rifles. Biden answered CNN’s Anderson Cooper when he asked if his federal buyback plan would mean the government would confiscate firearms. “Bingo,” Biden said. “You’re right, if you have an assault weapon. The fact of the matter is they should be illegal, period.”
Authorize Delays in FBI NICS Background Check System
Changes called for in the DNC platform will cause delays in the FBI’s National Instant Criminal Background Check System for gun sales. Right now, 91% of all NICs background checks are completed within a few minutes. Just 9% are delayed. Of those, 88% are finalized within three working days. The Democrats want to see background checks held up and delayed for many reasons.
Repeal of Protections for Gun Makers against Litigation
The DNC also seeks to revoke the Lawful Commerce in Arms Act, which blocks lawsuits against gun-makers arising from criminal activity by individuals. Such lawsuits threaten a vital American industry. Allowing a lawsuit against a firearms company for the actions of a deranged criminal would be like allowing a lawsuit against an automaker if a drunk driver runs a red light or deliberately runs over a pedestrian. The maker of the car, or firearm, should NOT be financially responsible for the illegal actions of product users.
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July 30th, 2023
August is National Shooting Sports Month — Head to the Range
Time flies, even during a pandemic. August is just two days away, and that means it’s time to get ready for National Shooting Sports Month (NSSM). To help grow the ranks of shooters, the National Shooting Sports Foundation (NSSF) asks you to bring a new shooter to the range in August. That’s a good mission — adding to the ranks of shooters is the best way to preserve our Second Amendment rights.
This coast-to-coast celebration spotlights the fun and enjoyment of target shooting. Newcomers can take their first shots, and experienced shooters can invite someone new to the range or help an erstwhile shooter rediscover the fun of target shooting. This month-long event involves all the shooting sports — rifle, pistol, and shotgun.
Find Shooting Sports Events Near You
The NSSF’s ShootingSportsMonth.org website offers a comprehensive, searchable database. This lets you search by state, to find ranges, events, and sales promotions near you. Visit the NSSF online database of NSSM shooting events to find matches, clinics, training sessions, special sales — and much more.
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To promote National Shooting Sports Month, the NSSF has created a dozen FREE Downloadable Targets. There are regular bullseyes, as well as Darts, Golf, and more. We really like the Billiards target and kids love the Water Balloons target. You can download all 12 targets for free, and then print them out, ideally with a color printer. Have at it!
CLICK HERE to Download 12 FREE Targets (1.2 mb ZIP) »
What Shooters Can Do to Promote National Shooting Sports Month:
The NSSF says: “As shooters, you serve a critical role in the continued growth of gun ownership and shooting sports participation. We urge you to join us this August for National Shooting Sports Month.” There are a variety of ways you can help this August:
— Introduce a family member, friend, or group of friends to the shooting sports by taking them to a local range that’s hosting an event.
— Spread the word to family/friends and encourage them to get out to the range in August.
— Encourage the ranges and retailers near you to host an event this August and add them to the official events calendar at www.ShootingSportsMonth.org.
Czech Republic May Adopt Second Amendment Type Law
The Czech Republic could add the right to armed self-defense to its document of fundamental rights. (Photo: Self-defense class in Czech Republic, Wikimedia commons)
Will the Czech Republic Get a Second Amendment?
by JORDAN MICHAELS
This story comes from GunsAmericaDigest. MORE STORIES HERE.
The U.S. Constitution’s guarantee of the right to keep and bear arms is unique on the world stage. And while courts and legislators routinely ignore or warp the words of the Second Amendment, it has stood as a bulwark against the worst kinds of anti-gun policies in places like Canada, Australia, and Europe.
This year, one of those European counties may be taking a step towards what Americans have enjoyed since 1789 [When the Bill of Rights was created].
For several years, conservatives in the Czech Republic’s parliament have been pushing to add the right to armed self-defense as one of the “fundamental human rights and freedoms”, according to David Harsanyi writing in National Review.
The proposed Amendment reads: “The right to defend one’s own life or the life of another person with a weapon is guaranteed under the conditions laid down by law.”
Conservatives passed the amendment through the lower house of parliament, but it failed in the upper house. But now they’ve earned a majority in the senate, and the Czech government unexpectedly announced it would endorse the plan to add the language.
The Czech Republic was the only European country to challenge the draconian European Firearms Directive passed by the European Union in the wake of the Charlie Hebdo terror attack in 2015. As GunsAmerica reported at the time, the Directive banned most types of semi-automatic firearms even in countries with high rates of firearm ownership and low rates of crime.
The Czech Republic lost its challenge to the directive in the European Court of Justice, but the Czech Senate first proposed a right to firearms several years ago after it had received a petition with more than 100,000 signatures. It’s unclear whether the pro-gun amendment will pass or if it will be able to override the EU’s Firearm Directive if it does. The amendment requires a 60% majority of both chambers of Parliament to join the country’s Charter of Fundamental Rights and Freedoms, but the center-right Civic Democratic Party may not be able to reach that threshold.
Czech Republic Firearms History
The Czech Republic ranks in the middle of the pack on the rankings of firearm ownership among European countries, but the country has a long history of firearm use and manufacturing. Rates of ownership have been increasing, and of course, the Czech Republic is also the home of the legendary firearms maker CZ.
The Czech Republic remains one of the safest countries in Europe and Prague remains one of the safest cities in the world. No doubt it would become even safer if every law-abiding citizen had protected right to keep and bear arms for self-defense.
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July 30th, 2023
The 300 Raptor — Monster .30-Caliber Magnum for Long Range
With the success of the 灯蓝永久免费加速器分享 (KO2M) event and the growing popularity of extreme long range shooting, we’ve seen an increased interest in really big cartridges for really long range. One such wildcat cartridge is the 300 Raptor pioneered by Kirby Allen. This monster magnum can launch a 230gr bullet at 3350 fps. That delivers some serious ballistics at extreme long range.
Kirby Allen of Allen Precision Shooting, latern专业破解版安卓最新版, has developed a .30-caliber, jumbo-sized magnum wildcat cartridge. The powerful 300 Raptor (center in photo) is based on Allen’s 338 Excalibur parent case (far right in photo), necked down to 30 Cal with shoulder moved forward to increase case capacity. Allen states: “This is the largest capacity and performance .30 caliber magnum on the market that can be used in a conventional-sized receiver.”
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Performance of Allen’s new 300 Raptor is impressive. Allen claims that “200gr Accubonds can be driven to nearly 3600 fps, 230gr Berger Hybrids to 3350 fps, and the 240gr SMK to right at 3300 fps. These loads offered case life in excess of 6-7 firings per case and many of my test cases have over 8 firings on each case so they are not an overly hot load showing the potential of this big .30 caliber.”
To showcase the new cartridge, Allen built up a prototype rifle with a McMillan A5 stock, Raptor LRSS Action with extended tenon, and a Jewell trigger. The first 300 Raptor Rifle is currently on its second barrel, a new 30″, 3-groove 1:9″-twist Lilja in a custom APS “Raptor Contour”. This distinctive dual-fluted contour runs full-diameter almost to the end of the stock, and then steps down and tapers to the muzzle, where a beefy Medium 3-port ‘Painkiller’ Allen Precision brake is fitted.
Story tip by EdLongrange. We welcome reader submissions.
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Jeff Quinn, Founder of GunBlast.com, Has Passed
Jeff Quinn holds his first-ever firearm, a Stevens Model 95 20ga shotgun he received at age 11.
We are sad to announce that Jeff Quinn, founder of GunBlast.com and pioneer internet gun reviewer, passed away on July 27, 2023. He will be missed. We met Jeff a few times at SHOT Show. We can tell you he was a very genuine, forthright man who truly loved the world of firearms. He was committed, to his dying days, to providing honest, reliable evaluations of guns. Over the years, GunBlast’s videos have received over 64 million views.
Jeff Quinn created GunBlast.com in the year 2000, two full decades ago. At the time, very few folks were making gun videos, and even fewer had the commitment to make it a real business. Guns.com explains how Jeff Quinn, with the help of his brother Boge Quinn, helped revolutionize gun reviewing:
“Jeff Quinn was a ‘salt of the earth’ kind of guy [who] loved God, family, and life. When he decided to pursue gun writing in 1999 as a hobby, few expected him to revolutionize the firearms industry — but that’s exactly what he did.
Tired of reading contrived gun reviews in his favorite gun mags, Quinn asked his more tech-savvy brother Boge, ‘If I could write about the gun, can you put it on the internet thing?’ Boge agreed and Quinn got to work. Jeff started photographing and writing about guns … ‘At first, we just reviewed guns that we already had’, said Boge[.] They put it online on a website they called GunBlast. At the time… the internet was still very young.
In this video, Jeff Quinn’s brother Boge Quinn talks about Jeff’s life, his character, his genuine love of firearms, and the health issues with which he struggled.
Reloading Rescue — How to Remove a Case Stuck in a Die
To err is human… Sooner or later you’ll probably get a case stuck in a die. This “fix-it” article, which originally appeared in the Western Powders Blog, explains how to remove a firmly stuck cartridge case using an RCBS kit. This isn’t rocket science, but you do want to follow the directions carefully, step-by-step. Visit the Western Powders Blog for other helpful Tech Tips.
Curing the Stuck Case Blues
Sticking a case in the sizer die is a rite of passage for the beginning handloader. If you haven’t done it yet, that’s great, but it probably will eventually happen. When it does, fixing the problem requires a bit of ingenuity or a nice little kit like the one we got from RCBS.
The first step is to clear the de-capping pin from the flash hole. Just unscrew the de-capping assembly to move it as far as possible from the primer pocket and flash hole (photo at right). Don’t try to pull it all the way out. It won’t come. Just unscrew it and open as much space as possible inside the case.
Place the die upside down in the padded jaws of a vise and clamp it firmly into place. Using the supplied #7 bit, drill through the primer pocket. Be careful not to go too deeply inside the cartridge once the hole has opened up. It is important to be aware that the de-capping pin and expander ball are still in there and can be damaged by the bit.
Drill and Tap the Stuck Case
Once the cartridge head has been drilled, a ¼ – 20 is tap is used to cut threads into the pocket. Brass is relatively soft compared to a hardened tap, so no lube is needed for the tapping process. RCBS says that a drill can be used for this step, but it seems like a bit of overkill in a project of this nature. A wrench (photo above right) makes short work of the project.
RCBS supplies a part they call the “Stuck Case Remover Body” for the next step. If you are a do-it-yourselfer and have the bit and tap, this piece is easily replicated by a length of electrical conduit of the proper diameter and some washers. In either case, this tool provides a standoff for the screw that will do the actual pulling.
With an Allen Wrench, Finish the Job
Run the screw through the standoff and into the tapped case head. With a wrench, tighten the screw which hopefully pulls the case free. Once the case is free, clamp the case in a vice and pull it free of the de-capping pin. There is tension here because the sizing ball is oversized to the neck dimension as part of the sizing process. It doesn’t take much force, but be aware there is still this last little hurdle to clear before you get back to loading. Don’t feel bad, everyone does this. 灯蓝加速器永久免费版
Article find by EdLongrange. We welcome reader submissions.
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July 29th, 2023
Legendary American Service Rifles on Shooting USA TV
This week Shooting USA TV has a great show, well worth watching. This episode features the history of U.S. military service rifles. Starting with the Trapdoor in 1873, and ending with the M14 in the 1960s, this episode traces 90 years of battle rifle development. This history lesson ends right before the general adoption of the M16 5.56x45mm infantry rifle.
In addition to history, today’s show talks about using Tripods in Precision Rifle Competition. PRS and NRL shooters can learn multiple ways to use a tripod for support during stages. These methods are explained by Staff Sergeant Tyler Payne from the USAMU Action Shooting Team.
Shooting USA airs Wednesday 9:00 PM Eastern and Pacific, 8:00 PM Central on Outdoor Channel. You can also watch Shooting USA any time online via Vimeo.com.
History of American Service Rifles
The Trapdoor was the first cartridge-firing service rifle, replacing cap and ball rifles. Then came the evolution to better, faster-cycling service rifles used in two World Wars, Korea, and the early Vietnam era. Those rifles were the Krag Jorgensen, 1903 Springfield, M1 Garand, and M14.
The Krag Jorgensen Served 1892 to 1907. First Smokeless Cartridge Rifle.
Caliber: 30-40 Krag
The 1903 Springfield Served as Primary Service Rifle 1903 to 1936.
Cartridge: .30-06 Springfield
The M1 Garand Served 1936 to 1958. First Semi-Auto Service Rifle.
Cartridge: .30-06 Springfield
The M14 Served 1959 to 1964. First Select Fire Primary Service Rifle.
Cartridge: 7.62x54mm NATO (.308 Winchester)
SSG Tyler Payne explains: “If you’re presented with a barricade where you can support the front of the gun, the tripod really shines as a rear support. With the front of the gun and the rear of the gun both supported, it’s like shooting off of a bench.”
Shooting USA is available lanter 专业版安卓破解版 via Vimeo.com. Watch a single episode for $0.99, or get a full-month subscription for $3.99 and watch as many shows as you like with limited commercial interruptions.
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July 28th, 2023
How Muzzle Velocity Changes with Different Barrel Twist Rates
Many barrel-makers mark the twist rate and bore dimensions on their barrel blanks.
Does muzzle velocity change with faster or slower barrel twist rates? Absolutely, but much less than you might think. Faster twist rates do slow down bullets somewhat, but the speed loss is NOT that significant. With Bartlein .308 Win barrels of identical length and contour, a 1:12″-twist barrel was only 8 fps faster than a 1:8″-twist barrel. That was the result of testing by Applied Ballistics.
The Applied Ballistics team tested six (6) same-length/same-contour Bartlein barrels to observe how twist rate might affect muzzle velocity. This unique, multi-barrel test is featured in the book Modern Advancements in Long Range Shooting, Vol. 1. That book includes other fascinating field tests, including a comprehensive chronograph comparison.
Barrel Twist Rate vs. Velocity — What Tests Reveal by Bryan Litz
When considering barrel twist rates, it’s a common belief that faster twist rates will reduce muzzle velocity. The thinking is that the faster twist rate will resist forward motion of the bullet and slow it down. There are anecdotal accounts of this, such as when someone replaces a barrel of one brand/twist with a different brand and twist and observes a different muzzle velocity. But how do you know the twist rate is what affected muzzle velocity and not the barrel finish, or bore/groove dimensions? Did you use the same chronograph to measure velocity from both barrels? Do you really trust your chronograph?
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After all the smoke cleared, we found that muzzle velocity correlates to twist rate at the average rate of approximately 1.33 FPS per inch of twist. In other words, your velocity is reduced by about 5 FPS if you go from a 1:12″ twist to a 1:8″ twist. — Bryan Litz
Most shooters don’t have access to the equipment required to fully explore questions like this. These are exactly the kinds of things we examine in the book Modern Advancements in Long Range Shooting, Vol. 1. In that book, we present experiments conducted in the Applied Ballistics lab. Some of those experiments took on a “Myth Buster” tone as we sought to confirm (or deny) popular pre-conceptions. For example, here’s how we approached the question of barrel twist and muzzle velocity.
Six .308 Win Barrels from Bartlein — All Shot from the Same Rifle
We acquired six (6) barrels from the same manufacturer (Bartlein), all the same length and contour, and all chambered with the same reamer (SAAMI spec .308 Winchester). All these barrels were fitted to the same Savage Precision Target action, and fired from the same stock, and bench set-up. Common ammo was fired from all six barrels having different twist rates and rifling configurations. In this way, we’re truly able to compare what effect the actual twist rate has on muzzle velocity with a reasonable degree of confidence.
Above, data shows relationship between Twist Rate and Muzzle Velocity (MV) for various barrel twist rates and rifling types. From fast to slow, the three 1:10″ twist barrels are: 5R (canted land), 5 Groove, 5 Groove left-hand twist.
We proceeded with testing all 6 barrels, with twist rates from 1:8″ to 1:12″. After all the smoke cleared, we found that muzzle velocity correlates to twist rate at the average rate of approximately 1.33 fps per inch of twist. In other words, your velocity is reduced by about 5 fps if you go from a 1:12″ twist to a 1:8″ twist. [Editor: That’s an average for all the lengths tested. The actual variance between 1:12″ and 1:8″ here was 8 FPS.] In this case the math prediction was pretty close, and we have to remember that there’s always uncertainty in the live fire results. Uncertainty is always considered in terms of what conclusions the results can actually support with confidence.
This is just a brief synopsis of a single test case. The coverage of twist rates in Modern Advancements in Long-Range Shooting Vol. 1 is more detailed, with multiple live fire tests. Results are extrapolated for other calibers and bullet weights. Needless to say, the question of “how twist rate affects muzzle velocity” is fully answered.
Other chapters in the book’s twist rate section include: · Stability and Drag — Supersonic
· Stability and Drag — Transonic
· Spin Rate Decay
· Effect of Twist rate on Precision
Other sections of the book include: Modern Rifles, Scopes, and Bullets as well as Advancements in Predictive Modeling. This book is sold through the Applied Ballistics online store. Modern Advancements in Long Range Shooting is also available as an eBook in Amazon Kindle format.
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July 28th, 2023
Remington Arms Company Files for Bankruptcy (Again)
Even with surging firearms sales in 2023, Remington Arms Company (Remington) found itself in financial trouble — with overwhelming obligations to creditors and investors. Accordingly, on July 27, 2023, Remington filed for Chapter 11 Bankruptcy — the second time in recent years.
Remington, based in Madison, North Carolina, filed for Chapter 11 in March 2018. With major loan reorganizations, Remington “emerged nearly two months later, having converted more than $775 million in debt into equity for its lenders.” (Source: Syracuse.com.) However, despite this debt-restructuring, the company has struggled with high interest costs and litigation related to the 2012 Sandy Hook Elementary School shooting. The perpetrator had a Bushmaster XM15-E2S rifle sold by Remington.
This time, there are more challenges — and it’s unclear how the company’s operations will fare in the months and years ahead. According to the Wall Street Journal, the debt-burdened firearms maker will seek buyers for its assets:
Remington Arms Declares Bankruptcy Despite Surging Gun Demand
Firearms maker Remington Arms Co. filed for bankruptcy protection for the second time since 2018, weighed down by more debt than it can repay even as fearful Americans buy more guns than ever.
Remington … sought chapter 11 protection and will try to sell its business at a time when civil unrest and worries about personal safety have driven firearm sales to record highs.
The chapter 11 petition in the U.S. Bankruptcy Court in Decatur, Alabama, marks Remington’s second restructuring since 2018, when it filed for chapter 11 and transferred ownership to investors including Franklin Resources Inc. and JPMorgan Chase & Co.
Remington has been searching for potential buyers and was in talks to sell itself out of bankruptcy to the Navajo Nation before negotiations collapsed in recent weeks, leaving the company without a lead bidder, or stalking horse, in place.
The manufacturer’s firearms and ammunition businesses could be sold off separately, according to a person familiar with the matter.
Source: Wall Street Journal, Emphasis Added
Remington Has a Storied History
Founded in 1816 by Eliphalet Remington in New York, Remington is the oldest continuously-operating gun manufacturer in the United States. Even with its present difficulties, Remington still sells more sporting rifles and shotguns than any other American company. Remington has developed more cartridges than any other U.S. company. And it is the only American company that sells firearms AND ammunition under its own name.
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In the hit Hollywood movie “The Patriot”, the hero Benjamin Martin (played by Mel Gibson), tells his sons: “Aim small, miss small”. That advice was given to help his sons survive encounters with the British redcoats, but the “aim small, miss small” mantra can benefit target shooters as well.
Right Click and “Save as” to download printable PDF versions of target.
In our 灯蓝专业版免费安卓 a reader recently asked: “How much neck tension should I use?” This prompted a 下载灯蓝专业版免费 in which other Forum members recommended a specific number based on their experience, such as .001″, .002″, or .003″. These numbers, as commonly used, correspond to the difference between case-neck OD after sizing and the neck OD of a loaded round, with bullet in place. In other words, the numbers refer to the nominal amount of interference fit (after sizing).
Neck-Wall Thickness is Important Too
Czech Republic Firearms History
Kirby Allen of Allen Precision Shooting, latern专业破解版安卓最新版, has developed a .30-caliber, jumbo-sized magnum wildcat cartridge. The powerful 300 Raptor (center in photo) is based on Allen’s 338 Excalibur parent case (far right in photo), necked down to 30 Cal with shoulder moved forward to increase case capacity. Allen states: “This is the largest capacity and performance .30 caliber magnum on the market that can be used in a conventional-sized receiver.”
Sticking a case in the sizer die is a rite of passage for the beginning handloader. If you haven’t done it yet, that’s great, but it probably will eventually happen. When it does, fixing the problem requires a bit of ingenuity or a nice little kit like the one we got from RCBS.
This is just a brief synopsis of a single test case. The coverage of twist rates in Modern Advancements in Long-Range Shooting Vol. 1 is more detailed, with multiple live fire tests. Results are extrapolated for other calibers and bullet weights. Needless to say, the question of “how twist rate affects muzzle velocity” is fully answered.
Bulletin FEED (RSS)
