One side has MOA (Minute of Angle) grid for MOA-based scopes. Flip target over for MIL adjustment grid.
Here’s a clever product that can speed up the process of sighting-in your rifles, whether you have a scope with MOA-based clicks or an optic with MIL-based clicks. Sport Ridge offers a pair targets that are printed on BOTH sides with precise grids based on your scope’s click values. One side has an MOA-based grid while the other side of the target has 1/10th Milliradian (MIL) grid.
Choose between two, double-sided printed targets: the 16″x16″ 100-yard Precision Rifle Target and the 10″x10″ 25/50-yard AR15 Sight-In Target. For both target types, side one has an MOA-based grid for scopes with 1/4-MOA or 1/8-MOA click values. Flip the target over to use the grid for MIL scopes with 1/10th Milliradian click values.
Sport Ridge’s Premium Precision Sight-In Targets allow you to adjust the point of impact quickly because the target’s grid boxes precisely match the click values of MOA and MIL measurement systems. Sport Ridge states: “No more guesswork at matching your optic’s adjustment value, saving your ammunition and time spent sighting-in firearms.” Get the 16″x16″ Precision Target 40-pack for $49.95, or the 10″x10″ AR Target 10-pack for $6.49.
Manufacturer Video Explains How to Sight-In with MOA/MIL Grid Target:
For MOA-type scopes, Sport Ridge also offers a single-sided Reflex Sight-In target with an MOA-based adjustment grid. This has a large center sighting bullseye so it can be used to confirm MOA-based click values at longer ranges (300+ yards) with rifles. Or use it at close range (for 10, 25, or 50 yards) for red-dot equipped pistols or shotguns. A 10-pack of these targets is $6.49.
REFLEX DOT SIGHT-IN TARGET
• Large Central Bull with MOA Grid
• Table of distance MOA optic click values
• Grid adjustment in direction Up/Down, Left/Right
This video explains general principles of sighting-in rifles, including dialing to Point of Impact:
The Cartridge Comparison Guide is a remarkably comprehensive 340-page, spiral-bound book. Covering over 250 cartridges, the Second Edition of the Cartridge Comparison Guide is the product of many years of labor by Andrew Chamberlain, a Utah-based hunter. Andrew says his Guide “compares every factory available cartridge from the 17 calibers up to the 50 caliber cartridges”. (Sorry, most wildcat cartridges are not covered.) Chamberlain’s Guide also compiles cartridge data from major ammunition manufacturers such as Barnes, Federal, Hornady, Norma, Nosler, Remington, Sierra, Swift, Weatherby, and Winchester. It shows the optimal velocity achieved for each bullet weight and calculates bullet energy, recoil, and powder efficiency. Large color photos illustrate handgun and rifle cartridges.
The Cartridge Comparison Guide provides data for thousands of cartridge/bullet/velocity combos. Quick reference sheets and ballistics charts cover Trajectory, Velocity, and Energy out to 500 yards. The Cartridge Comparison Guide also offers a firearms lexicon, plus Appendices covering Cartridge Selection for Game Animals, Bullet Selection/Design, Bullet Expansion, and Wound Channel Characteristics.
New Content in Second Edition of Cartridge Comparison Guide
The Cartridge Comparison Guide (Second Edition) costs $39.99 plus shipping and tax. CLICK HERE to visit the Online Store where you can order the 340-page book. Here’s what’s new in the Second Edition:
Addition of Shotgun Ammunition (Both Slug and Shot loads).
Momentum Calculation for all Rifle, Shotgun and Handgun loads.
Integration of Shotgun Slug Ammunition with Center Fire Rifle Data Tables.
Factory Load Summary Added (Shows manufacturers and loads produced).
One factory load and one hand load for every bullet weight available in each cartridge.
Over 90 pages of additional ballistics content (roughly 35% more than in First Edition).
Great Resource for Hunters
One of Chamberlain’s main goals in creating the Cartridge Comparison Guide was to help hunters select the right cartridge for the job: “This started as a personal project to gather information on the more popular cartridges commonly used for hunting. I wanted to find the best all-around performing cartridge and rifle that a guy on a budget could shoot. I began comparing cartridge performance, versatility, bullet selection, powder efficiency, recoil generation vs. energy produced, standing ballistic data for different environments….”
Giant Cartridge Poster for Computer Wallpaper (1665×1080 pixels)
Here’s a great illustration of hundreds of cartridges and shotshell types. For dedicated reloaders, this would work great as desktop “wallpaper” for your computer. CLICK HERE for full-size image.
If you are looking to acquire a reliable, accurate rifle for a late fall hunt, Howa can be a good choice. Howas feature smooth-running actions with fine two-stage HACT triggers. A Howa barreled action can also be a good basis for a DIY project. But some folks have heard that it may be difficult to find stocks, or to fit an after-market barrel. That’s not true. There are many stock options available, and in this article, Bill of RifleShooter.com shows that it is easy to remove the factory-installed barrel with the right tools. We think a Howa makes a fine basis for a varmint rig or field rifle. Or you can build a tactical rifle as Bill did. You can start with the factory barrel and when you want/need more accuracy, then have a gunsmith install a custom barrel from Krieger Barrels, Lilja Barrels or other quality brand.
The Carbon Stalker is an excellent ultralight factory option, weighing just 4.6 lbs. with Mini Action (before optics). All Howa Carbon Fiber Stalker rifles come with a Sub-MOA Guarantee and Lifetime Warranty.
What You Need to Know About Howa 1500-series Rifles
Tech Feature by Bill, editor of RifleShooter.com
Consider this article the “Howa 1500 Overview”. There has been a lot of interest in Howa rifles and barreled actions imported by Legacy Sports International. In addition to being able to buy a complete rifle from a dealer, Brownells sells barreled actions in a wide variety of calibers and configurations. In this post we are going to take a look at the Howa 1500 series.
Howa Rifles — General Background
Howa is a Japanese heavy machinery company. One of its product lines are firearms, which are imported into the United States of America by two different companies, Legacy Sports International and Weatherby. Legacy sells the 1500 under the manufacturers name while Weatherby re-brands the guns as the Weatherby Vanguard. In general, the finishes on the Weatherby rifles are more refined than the LSI-imported 1500s.
General Evaluation of Howa 1500 Rifles
I’ve found Howa 1500s to be solid, entry-level rifles that are capable of sub-MOA accuracy out of the box. I’ve actually purchased two Howa rifles I’ve tested because I like them so much. The gun below, a Howa Mini-Action in 7.62×39 Russian, is one of my favorite factory guns to shoot.
Check out this three-shot group I drilled at 100 yards with the rifle above and 125-grain Sierras. It took a lot of work and load development to get there, but when it did, it worked well.
Howa 1500 HACT 2-Stage Trigger
Howa 1500s feature the very nice Howa HACT trigger. This is an adjustable, two-stage trigger, set for about 3 pounds (combined stages). Crisp and repeatable, this is an excellent trigger for a factory gun. There is no annoying Glock-style safety lever in the middle of the trigger blade. The 2-stage design and pull weight range works well for a hunting rifle or a rig for PRS competition. Rifleshooter.com says the Howa trigger is “one of the best factory triggers, along with Tikka. I’ve found the Howa trigger superior to a Remington 700 — the Howas doesn’t need to be replaced.”
Writing for the Western Outdoor News, WONews.com, Steve Comus has field-tested the HACT Trigger. Steve writes: “I always liked two-stage triggers, because of the way I could take-up the slack and then actually know when the rifle was going to go off. The take-up on the [HACT] trigger was fast and easy. The crisp, positive release when pressure was put on during the second stage [reminded me] of some of the target rifles I shot through the years.”
Howa Actions — Three Options
Howa offers three action lengths: Mini, Short, and Long. You can see the bolts for the three action lengths in the image below. The Mini-Action has similar external dimensions to the Remington Model Seven, however, the Mini-Action’s bolt does not travel as far to the rear. This is a mixed bag. The upside is you have a quicker action (shorter bolt throw). The downside is you are limited to shorter rounds such as the .223 Remington, 7.62×39mm Russian, and 6.5 Grendel. But if you need a bigger cartridge, just choose the standard or long action Howa variant.
Howa 1500 vs. Remington 700 — Important Differences
Is the Howa 1500 a Remington 700 clone, or some kind of improved Remington 700? No, not really. While the top radius of the Howa 1500 does match the Model 700, and they can both use the same two-piece scope bases, there are a number of differences.
If you look at the Howa 1500 alongside the Remington 700 you’ll note the M700 is a round action, while the Howa is a flat-bottom action. In many ways the Howa’s bottom half reminds me of a push-feed Winchester. This means the chassis and stocks that support a Howa 1500 are not V-block based like you’ll find on a 700, instead they have a flat bottom. While the bolt of the Howa is similar in external appearance to the Model 700, it does offer some improvements, notably an M16-style extractor and a firing pin assembly that can be easily removed without tools.
Howa 1500 action screws are metric and are in a different location from the 700. The Howa 1500 has an integral recoil lug that accepts the front action screw, this means you have more of the front action screw engaging the action. WARNING: If you install it into a poorly-fitted stock or action you may bind it.
Can a Howa Action Be Used for a Custom Rifle Project?
Absolutely! You can either buy a barreled action from Brownells and throw it in a chassis system/stock of your choice or you can use a stripped action to build a custom rifle. If you are in the chassis market, MDT offers a wide variety of chassis in different price ranges. All have worked well for me.
How to Remove Howa Factory Barrel from Action
You may have heard internet grumblings about removing Howa barrels. Some keyboard commandos say they are extremely difficult to remove without a relief cut. Well Bill at Rifleshooter.com demonstrates that Howa barrels can be removed without trouble, provided you have the right tools. Watch this video:
Watch Howa Barrel Removal Video — Quick and Easy (Click Speaker Icon for Audio)
Q: Is it difficult to remove a barrel from a Howa 1500?
A: Not very. I’ve heard from some smiths that worked on Howas (years ago) that the factory barrels are difficult to remove. However of the half dozen or so Howa barrels that I’ve pulled, they’ve been very easy. I use a Brownells action wrench with the top piece for a Rem Model 700 and the flat bottom resting against the flat on the wrench.
Howa Actions Require Metric Barrel Threads
It’s easy to thread a barrel for a Howa action. You just have to cut metric threads — most lathes out there can cut them. I cut the threads below on a manual lathe using change gears. [Editor: John Whidden cuts metric tenon threads with a CNC lathe. “It’s easy,” John tells us, “No issue whatsoever.”]
Using Howa Actions for Custom Rifles
I have built a few customs with Howa actions. Below is one of my favorite, a .308 Winchester. It consists of a Howa 1500 action, Shilen Select Match Rem Varmint contour barrel\, and Modular Driven Technologies (MDT) ESS chassis. Great rifle and it hammers!
A while back our Aussie friend Stuart Elliot of BRT Shooters Supply filmed some interesting videos at the QTS range in Brisbane, Australia. Stuart told us: “I was shooting in an Air Gun Benchrest match here in Brisbane, Australia. I finished my target early and was awaiting the cease fire and took a short, slow-motion video of windflag behavior.” You may be surprised by the velocity changes and angle swings that occur, even over a relatively short distance (just 25 meters from bench to target).
Here are windflags in slow motion:
The flags show in the videos are “Aussie Wind Flags”, developed by Stuart Elliot. These are still produced in Australia, and are now available through BRTFlags.com.
Here is a video in real time:
Stuart says this video may surprise some shooters who don’t use windflags: “Many people say the wind doesn’t matter. Well it sure does — whether for an airgun at 25 meters or a long range centerfire at 1,000.” This video illustrates how much the wind can change direction and velocity even in a small area.
Introduction — What You Need in a Security Gun Safe
If you own firearms, you need a gun safe. In some states, such as California, if you don’t own a safe, you face potential liability if your firearms are stolen. Purchasing a safe is no easy decision however. There are dozens of safe manufacturers and countless design options. Sorting out the facts from the marketing claims can be difficult.
Today’s seven Saturday Showcase videos explain the most important qualities you should look for in a safe, and help you with the tough decisions, such as “Should I get a digital lock or a dial lock?”, “What kind of fire-proofing is most effective?”, “How big a safe do I really need?”, and “What interior works best with long-barreled scoped rifles?” You’ll find reviews of full-size safes, modular safes, and smaller handgun safes. Plus you’ll find expert advice on how to install your safe in your home and how to keep the contents free from rust.
Budget $1200-1500 for a safe from a major maker, with external hinges, and an interior at least 58″ high. That gives you room for 30″-barreled rifles with a top shelf for handguns and other valuables. A rotary rack and slide-out drawers are great additions.
Keypad or Dial? We favor rotary dial locks. With minimal maintenance they will function flawlessly for decades. But the digital locks offer quick-access and convenience. If you go digital, get a commercial-grade unit.
Fire-lining is worth getting, but a thin layer of sheet-rock doesn’t make a safe truly “fire-proof”.
Interior at least 58″ High and 30″ wide Overall Weight 750+ Pounds 8 Gauge or Heavier Wall Thickness Double-Wall, Composite Door with Relockers Minimum UL RSC Rated. TL-15 or TL-30 Rating is Desirable External Hinges
Mechanical UL Group II (or better) Lock with Standard Dial Or UL Type 1 Commercial-Grade Electronic Lock
Custom Interior Suitable for Scoped Guns with Long Barrels On-Door Storage System for Non-scoped Long Guns OR Rotary Gun Rack for Scoped Rifles and ARs
Internal (sandwiched) Insulator, Reinforced if Sheet-rock Palusol? Heat-Activated Expanding Door Seals
Slide-out Drawers for Handguns Fire-lined Inner Safe for Paper and Media
Low Gloss, Rust-resistant External Finish Pre-Drilled holes for Lag Bolts and in Rear for Electric Cord Overhead Fluorescent Lamp and/or LED Mini-lights on Strings
Advice for Gun Safe Buyers — Seven Key Things to Consider
This video covers key gun safe features — Seven Things to Consider Before Buying a Gun Safe. Not all gun safes are created equal. There are many variables — fire ratings, burglar ratings, colors, lock choices, internal capacity, door storage, and more. And with the recent controversy involving Liberty Safes, you should check the safe-maker’s policies regarding digital passcodes — you don’t want your passcode revealed without a warrant and/or without your consent.
DOs and DON’Ts of Safe Buying
DO purchase a safe that is bigger than you think you need.
Your gun collection is bound to grow over time. A good safe is more than just a gun locker–it becomes a secure storage device for your family’s other valuables as well. You’ll find you quickly fill up even a large safe. Spend the money for the size, protection, and features you want. Your gun collection may be worth many tens of thousands of dollars. Some people who visit this site wouldn’t hesitate to spend $1300 for a custom action or $1800+ for a competition scope, yet they don’t want to spend more than a few hundred dollars on a safe. That’s not common sense. If you’re on a tight budget, consider a used safe. Unlike many other products, safes don’t really wear out over time. When businesses change locations, you can get a very high quality commercial safe for little more than the cost of removing it.
DO spend more for a safe that offers fire-resistance.
But you have to do your homework–you can spend a lot of money for “fire-proofing” that actually is not very effective. Make sure if sheet-rock is used that it is properly installed. If you have valuable documents and media files, it’s not a bad idea to purchase a smaller, commercial-grade fire safe to put inside the gun safe. This gives you double protection.
DO look at many different brands of safes before you buy.
There ARE significant differences among brands. For example, Browning offers a unique (patent-pending) door-mounted rifle rack. Zanotti offers slide-out drawers and a modular design that is much easier for an owner to move. Ft. Knox uses an advanced method to secure and stabilize its fire-proofing layers within the safe. Brown offers custom exotic wood interior shelving and safes with commercial-grade burglary protection (much thicker steel with heavy composite doors and walls). Amsec offers a proprietary “DryLight” poured concrete-type fire insulation with greater structural strength than typical sheet-rock panels.
DO investigate the safe’s specifications.
Just because a safe is big and heavy doesn’t mean it’s particularly secure. Heavy-gauge steel is much more resistant to cutting and drilling than light 12- or 14-gauge steel. Some safes on the market have walls so thin they can be penetrated with a fire ax. We recommend 10-gauge steel at a minimum, and 8 gauge is much better. The safe should carry a UL RSC (Underwriters Laboratories “Residential Security Container”) or better rating.
DO ask about the safe’s safeguards against tampering.
A quality safe will feature extra armor or devices to defeat drilling. Low-grade safes can be opened in a few minutes with simple, battery-powered hand tools. All safes should have relockers to help ensure the safe remains locked in the case of a burglary. Relockers are hardened pins that are triggered during an attack, and cannot be retracted without hours of drilling. The number of relockers on a safe ranges from 2-10+ depending on the safe’s size and burglary grade.
DON’T store powder in your safe. A tightly-sealed metal box with a large quantity of powder inside is a bomb. Store powder in a separate, lightly-constructed cabinet or plastic box. The main thing for powder is to keep it dry and away from moisture and light.
Don’t Make the Mistake of Buying an Undersized Safe
The most common mistake people make when buying a gun safe is getting a safe that’s too small. This video explains why you should probably invest in a bigger safe. First, the rated gun capacity is exaggerated — rifles with mounted optics, long barrels, wide forearms and/or pistol grips take up considerably more space than a small rimfire rifle or a lever gun with iron sights. Second, your gun collection will likely grow in years to come. Third, you may want to store other valuables in the safe — such as vital documents, jewelry, watches, and pricey electronics. In this video the host notes: “Get a much larger safe than you think you’ll need at first. This will guarantee that you will have enough room for future purchases and all the guns and equipment you currently have.”
What Happens in a Fire and Deluxe Features
This video shows what can happen INSIDE a gun safe during a fire. This Winchester safe did not fare well during a major hourse. That’s why you want to buy a safe with a good fire rating.
This video shows the features of a large Superior Safe Co. gunsafe with internal organizers and door storage for handguns and accessories.
Modular Safes — Smart Option for Easier Moving
This article features a great video showing how to assemble a modular safe in under 30 minutes. This article also explains the benefits of modular gunsafes — primarily easier transport and installation. “Modular safes have been around for a few years now and are becoming more popular. Here’s why: The safe comes delivered to you in panels, so you can bring them into your home one at a time and put it together anywhere you like. This makes it easy to carry up and down stairs, onto elevators or anywhere! Security — Is it as secure as one that comes pre-assembled? The answer is, absolutely.” READ FULL ARTICLE on NRAWomen.com.
Five Good Gun Safes Under $500
We know some readers have a tight budget. This video looks at some recommended lower-cost safes under $500.00 list price. Note, however, that this video was produced in 2022. Now in 2023, with Bidenflation, the actual gun safe prices may be higher. For a full-size safe, we do recommend you spend quite a bit more — the investment in a higher quality safe, with better fire rating, is worth it.
Locking Device–Mechanical Dial vs. Digital Locks Recommendation: UL Group II mechanical dial lock or commercial-grade electronic.
For gun safes, we prefer rotary-combination dial locks, although commercial-grade electronic locks are now very good. While less convenient, and slower to open than electronic locks, combination locks are still more durable and trouble-free than the digital locks found on many low- to medium-cost gun safes. Among the combination locks, the Sargent & Greenleaf model 6730 (UL Group II) remains an industry standard. The director of Sturdy Safes noted: “An S&G 6730 will be working fine when your grandchildren have grandchildren.” For home use, we also recommend the standard, high-visibility “front-read” white on black dial.
Avoid the cheap, imported electronic locks. These are known for failing relatively quickly–the keypad internals just wear out. With some of these designs, if the lock fails while the door is closed, you’ll have to employ a professional gunsmith to drill your safe and replace the locking assembly and keypad. With any electronic lock, re-program your combination now and then so that keypad wear patterns don’t reveal the numbers you push to open the safe. But when you change the combination, be sure to record the new setting.
With a dial lock, choose a design that meets UL Group II (or better) certification. If you choose a digital lock, we strongly recommend that you select a UL Type I, Commercial Grade lock from LaGard, Sargent & Greenleaf, or Kaba Mas. Commercial-grade locks, such as the S&G Comptronic” 6120 or LaGard “SafeGard” are much more robust and are designed to be used 20 times a day or more in retail and banking environments. A good commercial digital keypad lock should give 10 years or more of continuous use before replacement is required. With any digital lock, however, you should replace the battery at least once a year. Normally this can be done without professional assistance.
A rapid-access bedside safe is a great way to keep your pistol secure, but also readily available, close at hand. Not all rapid-access pistol safes are created equal, however. In this video, John of Pew Pew Tactical explains what to look for in a small pistol safe, and points out the pros and cons of the four safes tested:
Fort Knox PB1 Simplex Pistol Box
Strong case, reliable no-battery locking system. Very good safe, but expensive ($299.00 on Amazon).
Vaultek Electronic Pistol Safes
Multiple styles, thin profile, 5-button electronic ($174.99 on Amazon), or Biometric with sliding door ($359.99 on Amazon), both with rechargeable batteries.
VERPROOF Quick Access Handgun Safe
Designed for vertical mount under desk on vehicle, One gun only, requires batteries, $69.99 on Amazon.
Kevin Muramatsu’s black rifle book, the Gun Digest Guide to Customizing Your AR-15, is a great resource for fans of AR-platform rifles. All the AR options you can imagine are covered: suppressors, premium barrels, adjustable stocks, free-float handguards, ergonomic grips, buffer systems, tactical lights and much more. Those planning an AR rifle build will find application-specific suggestions for 3-Gun, Service Rifle, High Power (Space Gun), Hunting, and Self-Defense use.
Firearms expert Muramatsu offers advice on choosing the right stock/barrel/optics configuration for your particular game. He also discusses the wide variety of options for slings, grips, magazines and other accessories. With over 520 photos, the book includes a large photo gallery of customized ARs, and includes bonus coverage of the FAL and other “tactical” firearms. The Gun Digest Guide to Customizing Your AR-15 is available from Amazon.com (#ad) for $35.95, and a Kindle eBook version is offered for $14.99. The book is also sold by Barnes & Noble, and most other major booksellers.
This video starts off slow, but it is worth watching if you own any AR-platform rifle. It illustrates the key operations during the charging, loading, firing, and ejection processes. The cutaway animation shows how rounds are stripped from the magazine and then chambered. It then shows how every part of the trigger group works, and how the firing pin strikes the primer.
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Close-up view of a sectioned case. This one here was “fixin’ to pop”, observed Glen Zediker.
Here are highlights from an article Glen Zediker wrote for the Midsouth Blog. In that article Glen, who sadly passed away in 2020, focused on cartridge brass. Glen identified the most common failures that appear with brass that has been shot multiple times, or which has been fired at excessive pressures. Glen explained some simple ways to check your cartridge brass to detect “early warning signs” of case failure, particularly case head separation, which can be very dangerous.
How Cases Degrade with Multiple Firings By Glen Zediker
This article explains when, and then how, to check after the progress of changes commencing with the firing on a new case. It’s the “progress of degeneration,” in a way of looking at it because the concern is getting a handle on when enough change in the brass has come about to require attention. Or abandonment. As said then, for me that’s 4 firings. That, as said last time, is when I might see changes that need attention. Also as said, that figure didn’t come out of a hat, but from my own notes in running my competition NRA High Power Rifle loads. [Editor’s Note: With Lapua brass, using moderate loads, in bolt-action rifles, we typically get about 10 good (match-worthy) firings. But if you anneal your Lapua brass, and run modest pressures, Lapua brass can perform well for 20 or more load cycles.]
The areas most affected are the case neck and case head area. Case neck walls get thicker [but] the case head area body walls get thinner. Primer pockets get shallower and larger diameter.
This case shows a cracked neck AND a crack (separation) above the case head. Zediker says it is “rare to see one case with both of the most common failures. [This case] was attacked by an M14.”
Case Head — Causes of Separation and Cracking
When a case is under pressure during firing, the brass, like water, flows where it can, where it’s more free to move. Of course, the chamber steel limits the amount it can expand. The case shoulder blows fully forward and the case base is slammed back against the bolt face. There is, therefore and in effect, a tug on both ends — it gets stretched. The shoulder area is relatively free to expand to conform to the chamber, but the other end, the case head area, is not. Since that’s the area of the case with the thickest walls, it doesn’t expand “out” much at all. What it does is stretch. The “case head area,” as I refer to it here, is the portion of the case above the web, which is just above the taper that leads in to the extractor groove. The “area” extends approximately an eighth-inch up the case body.
Here’s a “pressure ring.” You’ll see this after firing, if you see it. And, if you see it, that case is done. The bright ring indicates excessive stretching, which indicates excessive thinning. If you see a ring circling the case, noticeable because it’s lighter color than the case body, and it’s in this area, I’d say that case is done. And that’s right where a “head separation” occurs. It can crack and also blow slap in two, and that’s the “separation” part of case head separation.
Photo courtesy GS Arizona.
This is a spot to keep close watch on as cases age. It is also the area that is more “protected” by sizing with less case shoulder set-back. That is, pretty much, where the freedom for the stretching movement in this area comes from (the case shoulder creates a gap). If you’re seeing a sign that a head separation [might happen with relatively few firings], chances are the shoulder set-back is excessive, and also… the load pressure level.
Bent Paper Clip Case-Wall Gauge
Editor: You can use a bent paper clip to detect potential case wall problems. Slide the paper clip inside your case to check for thin spots. GS Arizona explains: “This simple little tool (bent paper clip) will let you check the inside of cases before you reload them. The thin spot will be immediately apparent as you run the clip up the inside of the case. If you’re seeing a shiny line on the outside and the clip is really hitting a thin spot inside, it’s time to retire the case.” Photo by GS Arizona.
Monitor Primer Pocket Dimensional Changes
Another case-head-area and pressure-related check is the primer pocket. As said, the primer pocket will get larger in diameter and shallower in depth each firing. As with many such things, the questions are “when” and “how much,” and the main thing, “how much?”
If the pocket gets excessively shallow, and that’s judged by a primer that seats fully but isn’t at least a tick below flush with the case base, there could be function issues. There’s a risk of a “slam-fire” with a semi-auto that uses a floating firing pin, and, if there is actual protrusion, that has the same effect as insufficient headspace. A primer pocket uniformer can reset the depth of a shallowed primer pocket to what it should be, but the real test for me is how easily the next primer seats into it. If it’s significantly less resistance, I’ll say that case is done. Shallower can be refurbished. That’s a primary function of a primer pocket uniformer. Larger diameter, though, can’t be fixed. I’ve mentioned in another article or two that, any more at least, my main gauge of load pressure has become how much primer pocket expansion there’s been.
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?
Summary of Test Results
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
Savage Test Rifle with Six Bartlein Barrels
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.
Prior to live fire testing, we explored the theoretical basis of the project, doing the physics. In this case, an energy balance is presented which predicts how much velocity you should expect to lose for a bullet that’s got a little more rotational energy from the faster twist. In the case of the .30 caliber 175 grain bullets, the math predicts a loss of 1.25 fps per inch-unit of barrel twist (e.g. a 1:8″ twist is predicted to be 1.25 fps slower than a 1:9″ twist).
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 at thescienceofaccuracy.com. Modern Advancements in Long Range Shooting is also available as an eBook in Amazon Kindle format.
Guys — honestly, if you do anything today on this site, watch this video. You won’t be disappointed. Guaranteed. This is a very informative (and surprisingly entertaining) video. Every serious hand-loader should watch this video to see how cartridge cases are made. Your Editor has watched the video 5 times now and I still find it fascinating. The camera work and editing are excellent — there are many close-ups revealing key processes such as annealing and head-stamping.
VERY Informative Video Show Cartridge Brass and Ammunition Production:
Norma has released a fascinating video showing how bullet, brass, and ammunition are produced at the Norma Precision AB factory which first opened in 1902. You can see how cartridges are made starting with brass disks, then formed into shape through a series of processes, including “hitting [the cup] with a 30-ton hammer”. After annealing (shown at 0:08″), samples from every batch of brass are analyzed (at multiple points along the case length) to check metal grain structure and hardness. Before packing, each case is visually inspected by a human being (3:27″ time-mark).
The video also shows how bullets are made from jackets and lead cores. Finally, you can watch the loading machines that fill cases with powder, seat the bullets, and then transport the loaded rounds to the packing system. In his enthusiasm, the reporter/narrator does sometimes confuse the term “bullets” and “rounds” (5:00″), but you can figure out what he means. We definitely recommend watching this video. It’s fascinating to see 110-year-old sorting devices on the assembly line right next to state-of-the art, digitally-controlled production machinery.
Video tip by EdLongrange. We welcome reader submissions.
The Smith & Wesson Model 41 is a classic American rimfire target pistol. Beautifully crafted, the Model 41 boasts a superb trigger, comfortable grip, and excellent accuracy. New or used, a Model 41 is a fine addition to any firearms collection. We’ve shot a few Model 41s, and they will spoil you if you go back to a lesser rimfire pistol. First released commercially in in 1957, a special 50th Anniversary Model (shown above top) came out in 2007 (hitting the market in 2008). Perhaps it should have been named the 60th Anniversary edition, as the first prototypes of the Model 41 were crafted way back in 1947. READ American Rifleman article about Model 41.
The Model 41 is one of those classic American designs that has stood the test of time. Many feel the Model 41 represents the apex of American .22 LR pistol design, much like the Colt Python is the “crown jewel” of double-action revolvers. One YouTube poster noted: “After [65] years the Model 41 is still near the top of the game in precision .22s. Very few if any of the current day pistols can match the workmanship, fit, and balance that makes having a Model 41 so enjoyable to own.”
The Stunning 50th Anniversary Edition Model 41
Probably the most sought-after Model 41 is the handsome, machine-engraved 50th Anniversary Model, released in 2007. This was offered in a hardwood, glass-covered case. This would be a prized addition to any gun collection. For $2000.00 to $3700.00 you can find the fully engraved, 50th Anniversary Model 41 in presentation case on various auction websites. First released in 2007, the engraved model 41 combines superior accuracy with stunning appearance.
The 50th Anniversary Model was machine-engraved with Class A+ coverage, 24 carat gold striping, and special serial number range FYA0001 – FYA0500.
Smith & Wesson Model 41 — An American Classic Rimfire Pistol
The Smith & Wesson Model 41 is an American classic — one of the great, iconic .22 LR target pistols. Accurate, well-balanced and built-to-last, model 41s have been in production for over 50 years. The Model 41 remains one of the most accurate pistols ever produced by Smith & Wesson.
Model 41 photo by Mightymoo01, creative commons released CC BY-SA 3.0.
Beautifully crafted, the Model 41 boasts a superb trigger, comfortable grip, and excellent accuracy. Whether an older classic or a newer model, the S&W Model 41 is something every gun owner would prize for target shooting. And “like new” high-grade models are now appreciating in value!
Field Test of Current Generation S&W Model 41
So how do modern production Model 41s shoot? Very well indeed, based on the results from popular gun Vlogger 22plinkster. He took a new Model 41 to his test range and tested it for handling and accuracy. Watch the 22plinkster video below:
22plinkster runs of the most popular gun-centric YouTube channels. His videos have been watched by hundreds of thousands of firearms fans. Some of .22 Plinkster’s videos involve trick shots, but he’s actually a very competent marksman who has shot a vast collection of .22 LR/22 WMR pistols and rifles, making him a qualified rimfire expert.
For MOA-type scopes, Sport Ridge also offers a single-sided Reflex Sight-In target with an MOA-based adjustment grid. This has a large center sighting bullseye so it can be used to confirm MOA-based click values at longer ranges (300+ yards) with rifles. Or use it at close range (for 10, 25, or 50 yards) for red-dot equipped pistols or shotguns. A 10-pack of these targets is $6.49.
The 
Howa 1500 HACT 2-Stage Trigger
For gun safes, we prefer rotary-combination dial locks, although commercial-grade electronic locks are now very good. While less convenient, and slower to open than electronic locks, combination locks are still more durable and trouble-free than the digital locks found on many low- to medium-cost gun safes. Among the combination locks, the Sargent & Greenleaf model 6730 (UL Group II) remains an industry standard. The director of Sturdy Safes noted: “An S&G 6730 will be working fine when your grandchildren have grandchildren.” For home use, we also recommend the standard, high-visibility “front-read” white on black dial.
Norma has released a fascinating video showing how bullet, brass, and ammunition are produced at the 
