Here is a clever DIY tool we learned about from Frank Shuster, a Forum member, who, sadly, passed away in 2015. Frank was a very knowledgeable shooter who was always willing to help others. Here is one of Frank’s smart inventions. He devised a way to measure the length of a rifle’s chamber using a fired cartridge case. Frank’s system works by cutting a “collar” from part of the case neck. This then slips over a bullet seated in a case loaded without powder or primer. As you chamber the dummy round, the collar will move back to indicate the full length of the chamber. (Make sure the bullet is seated well off the lands so the dummy round can chamber fully.)
The pictured gauge can be home made (for free) with components you already have on hand. Frank explained: “I used a Dremel cut-off wheel to cut the front half of the case neck off. A jewelers needle file to de-burr both rough-cut edges. The cut-off surface does not need to be perfectly square, because you are using the original straight mouth to make contact at the front of the chamber. Seat any old bullet to the approximate normal seating length. Next apply a tiny drop of oil on the ogive of the bullet, and slide the ‘collar’ over the bullet. Then chamber the dummy round and close the bolt. Extract the round slowly and carefully and take the measurement with calipers (see top photo).”
Frank’s DIY chamber length gauge works well. In a related Shooters’ Forum thread, Frank posted: “I’ve compared length dimensions doing it this way and with the chamber length shown on my chambering reamer drawings, and the Sinclair gauge, and they are all within .001″ or so.”
Commercial Chamber Length Gauges May Not Work with Custom Chambers
Frank did use Sinclair chamber-length gauges for some applications. These bullet-shaped gauges slip into a cartridge, but “it’s inconvenient to order that little gauge only… without spending $6 shipping for a $7 item.” Moreover, the Sinclair gauges may not fit a custom chamber with a tighter neck dimension because the diameter of the ring at the end is too large.
As an alternative to commercial gauges, the collar-type, homemade gauge will function properly in a custom chamber. The homemade gauge will work with smaller-than-standard chamber neck dimensions, as long as you use a piece of appropriately-turned fired brass that fits your chamber.
In April 2020, the National Rifle Association (NRA) launched NRAWomen.com, a website dedicated to the fastest-growing group of firearm owners — America’s women. This website serves the increasing number of female gun owners, huntresses, and competitive shooters. Female involvement in firearms is growing significantly. Consider these numbers: Statistica estimates that 19% of women in the USA owned firearms in 2020, while 23% of women surveyed in a 2011 Gallup Poll stated they owned a gun.
Jessie Harrison is one of the greatest female pistol shooters on the planet.
Here are three excellent Articles from the NRAWomen.com website, all worth reading. For each example, Click the Photo or direct link to read the full article on NRAWomen.com.
1. Flying with Firearms — What You Need to Know
We recommend that any gun owner, female OR male, should definitely read this article. It is one of the better discussions on the web of airline travel with firearms, covering international travel as well as domestic flights. The article notes that you should obtain U.S. Customs Form 4457 before flying overseas with a firearm.
“Flying with a gun is actually a lot easier than you’d probably expect. You need a couple of specific gear items, and you need to know the proper procedure, but it’s a relatively simple process. I’ve flown with long guns and handguns dozens of times around the country and around the world. The process is generally the same, but with some additional steps and maybe additional hassle depending on the airport [and personnel.]” READ FULL ARTICLE on NRAWomen.com.
2. Modular Safes — Smart Option for Easier Moving
The second 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.
3. Rimfire .22 LR Handguns for Self-Defense
This article looks at a wide variety of .22 LR pistols and revolvers. The author discusses the pros and cons of a rimfire defense gun, concluding that while the stopping power is limited, having some protection is better than going unarmed.
“Over the last few months we’ve seen the launch of new handguns chambered for .22 LR that sport the same looks and features as center-fire handguns designed for daily concealed carry. The models I’ve had a chance to work with so far include the compact Taurus TX22 semi-automatic pistol, the pocket-size Ruger Lite Rack LCP II, Kel-Tec’s P17 semi-automatic and the Taurus 942 8-shot snubnose revolver.” READ FULL ARTICLE on NRAWomen.com.
Performs as Promised — Prevents Mess at Home or at Range
When cleaning rifles, wet and dirty patches can make a real mess. And solvent spray from the muzzle is another issue. Here’s a solution — the MTM Gun Cleaning Patch Catcher. Simply slip it over your barrel to contain all the patches pushed out the muzzle and retain solvent spray/drips. No more mess and stains on your bench/table. When cleaning tasks are done, simply remove the Patch Catcher and dump the contents into the trash. The MTM Gun Cleaning Patch Catcher is just $11.69 at Grafs.com, $12.99 at Brownells, and $13.49 at MidwayUSA.
This handy see-through green container fits on the end of your rifle or shotgun barrel. It works with all patch types and bore sizes and fits virtually all barrel diameters, large and small. Slip the MTM Gun Cleaning Patch Catcher over your barrel to contain all the patches pushed out the muzzle. When cleaning tasks are done, simply remove the Patch Catcher and dump the contents into the trash. Watch the video to see how the MTM Patch Catcher works.
We’ve tried this product and it definitely helps keep work surfaces and floors clean. No more messes on the bench or spray from solvents. Purchasers do like this product — it has 78% five-star reviews on Amazon.
One owner explains: “This box straps over the muzzle end of a barrel and keeps the mess completely contained. Excess cleaning solvents collect in the bottom. Patches fall off the jag and are captured as well when the cleaning rod is withdrawn. It also completely contains the splatter burst when a bore brush exits the muzzle of whatever firearm is being cleaned.” (D.J. Bradley)
Here are actual user reviews from verified customers:
“It’s been a long time since I bought something that is just WOW brilliant but this patch catcher is just that. It is so simple, so neat, so clean and so effective. It fits perfectly on all my rifle barrels and catches patches, brush spray and most importantly most of the smells of solvents. I can now clean my rifles in the house without inviting the wrath of my darling wife.” — Emmitt P. (Amazon)
“The MTM Patch Catcher works great! It is easy to adjust to different size barrels, and … all the gunk stays in the trap! Now, no more cleaning up the work bench/floor area after gun cleaning. This trap is a must have! I never knew I needed one of these until I got the MTM one from Graf’s. My buddy had a different brand, and it was hard to use. On his, the trap that holds the dirty patches and ‘juice’ would not stay in place, and some times most of the gunk ended up on the floor.” — Michael T (Grafs.com)
“This little device is more than a patch catcher. It also contains that dirty, smelly spray when a bore bristle exits the barrel. With the [MTM Patch Catcher] top open, it will also catch spray cleaners and lubes when used on small parts.” — TwoBoxer (Amazon)
Gun Variant Q & A — Yes it works with ARs and Muzzle Brakes
Q: Has anyone used this with an AR15?
Answer: It works quite well — goes on and off easily. Slide it on the barrel until you can tighten the strap behind the flash suppressor. — Cactus
Q: Does this fit securely if you have a standard muzzle brake?
Answer: Yes, I regularly use this product on all of my rifles including my Savage 111 Long Range Hunter with a factory brake. It really keeps the smell down with the top closed. Also stops the splatter of a stiff brush exiting the muzzle. Great Product! — Iklwa
Creedmoor Sports is a leading vendor of products for competitive shooters and serious hand-loaders. Along with great gear, Creedmoor Sports provides informative content for its customers. The Creedmoor InfoZone provides Reloading Tips, Gear Reviews, Shooting News, and basic gunsmithing information.
Bill Gravatt, President of Creedmoor Sports, is an expert on reloading processes and gear. He developed many of the popular tools marketed by Sinclair Int’l, and he brings that expertise to Creedmoor Sports. Bill hosts a series of “how-to” videos produced for the Creedmoor InfoZone.
In this video, Bill Gravatt demonstrates several methods to clean your cases. Bill tells us: “Powder residue should be removed before you insert your cases into your reloading dies. There are several ways to clean your cases. Many shooters use a combination of various methods…”
1. Manual Cleaning — You can use 0000 Steel wool for the outside of the case and a Case Neck brush for the inside. A paper towel can remove any remaining residue. This is a handy way to clean if you load at the range.
2. Vibratory Tumbling — This traditional method works well, particularly for pistol brass. Experiment with both Corn Cob and Walnut media. You can get a brighter shine by putting a small amount of liquid brass polish in the media.
3. Wet Tumbling with Stainless Media — This process can get your brass clean inside and out. Do check to ensure no pins are stuck in the flash-holes. Watch for peening of case mouths that can occur over time.
4. Ultrasonic Cleaning — Ultrasonic cleaning works great for small parts as well as brass. The ultrasonic process removes all carbon and traces of lube, which can leave the inside of case necks too dry. To smooth bullet seating, try putting a tablespoon of Ballistol in the cleaning solution.
Cleaning Reloading Dies
Cleaning your reloading dies is something that many hand-loaders neglect. In this 60-second Tech Tip, Bill Gravatt provides some smart advice on cleaning your dies. Bill notes: “After heavy use, case lube and carbon can build up in your reloading dies. It’s important to keep them clean. Also, with new dies, give them a good cleaning before first use, because they ship with a corrosion inhibitor.”
1. Step 1 — Prior to cleaning, disassemble the die and spray it with a good degreaser. Do this with brand new dies too.
2. Step 2 – Take a patch and run it in the die to remove old lube and gunk. Don’t forget the decapping assembly and other internal parts.
3. Step 3 — After cleaning the die, but before reassembly, spray the die with a good corrosion inhibitor, such as Corrosion-X or Starrett M1.
Among AccurateShooter’s most-visited web pages have been powder relative burn rate reference guides ranking powders from fastest to slowest. Here is the latest version of the Powder Burn Rate Table. Compiled by Hodgdon Powder Co., this Burn Rate Chart displays the relative burn rates of 176 different powders. Shown below is the latest table, released by Hodgdon in July 2024.
You’ll want to download this Powder Burn Rate Chart PDF. This 176-entry comparison table provides vital information for hand-loaders — with tested burn-rates. Note — this invaluable chart is not limited to Hodgdon and IMR propellants. This burn rate chart includes powders from eight major powder-makers: Accurate, Alliant, Hodgdon, IMR, Norma, Ramshot (Western), Vihtavuori, and Winchester.
This chart (July 2024 version) provides useful information for all hand-loaders. When doing load development, and testing one powder versus another, it’s generally wise to choose propellants that share the same relative burn rate, as least for starters.
NOTE: Hodgdon powders are red, IMR powders are yellow, Winchester powders are blue, Accurate powders are gray, and Ramshot powders are orange. Powders from Alliant, Norma, and Vihtavuori appear on the chart with white background. DOWNLOAD Burn Rate Chart HERE as PDF.
Photo 1: Three Near-Equal-Weight 7mm Bullets with Different Shapes
TECH TIP: Bullets of the same weight (and caliber) can generate very different pressure levels due to variances in Bearing Surface Length (BSL).
This article, from the USAMU Facebook Page, concerns reloading safety. In the relentless quest for more speed and flatter ballistics, some hand-loaders load way too hot, running charges that exceed safe pressure levels. Hint: If you need a mallet to open your bolt, chances are your load is too hot. Stay within safe margins — your equipment will last longer, and you won’t risk an injury caused by over-pressure. In this article, the USAMU explains that you need to account for bullet shape, diameter, and bearing surface when working up a load. Don’t assume that a load which is safe for one bullet will be safe for another even if both bullets are exactly the same weight.
How Bullet Profile and Bearing Surface Affect Pressure Levels
Today, we continue our handloading safety theme, focusing on not inadvertently exceeding the boundaries of known, safe data. Bullet manufacturers’ loading manuals often display three, four, or more similar-weight bullets grouped together with one set of load recipes. The manufacturer has tested these bullets and developed safe data for that group. However, seeing data in this format can tempt loaders — especially new ones — to think that ALL bullets of a given weight and caliber can interchangeably use the same load data. Actually, not so much.
The researchers ensure their data is safe with the bullet yielding the highest pressure. Thus, all others in that group should produce equal or less pressure, and they are safe using this data.
However, bullet designs include many variables such as different bearing surface lengths, hardness, and even slight variations in diameter. In fact, diameters can occasionally range up to 0.001″ by design. Thus, choosing untested bullets of the same weight and caliber, and using them with data not developed for them can yield excess pressures.
This is only one of the countless reasons not to begin at or very near the highest pressure loads during load development. Always begin at the starting load and look for pressure signs as one increases powder charges.
Bullet Bearing Surface and Pressure
Bullet bearing surface length (BSL) is often overlooked when considering maximum safe powder charges and pressures. In Photo 1, note the differences in the bullets’ appearance. All three are 7 mm, and their maximum weight difference is just five grains. Yet, the traditional round nose, flat base design on the left appears to have much more BSL than the sleeker match bullets. All things being equal, based on appearance, the RN/FB bullet seems likely to reach maximum pressure with significantly less powder than the other two designs.
TECH TIP: Bullets of the same weight (and caliber) can generate very different pressure levels due to variances in Bearing Surface Length (BSL).
Bullet 1 (L-R), the RN/FB, has a very slight taper and only reaches its full diameter (0.284 inch) very near the cannelure. This taper is often seen on similar bullets; it helps reduce pressures with good accuracy. The calculated BSL of Bullet 1 was ~0.324″. The BSL of Bullet 2, in the center, was ~0.430″, and Bullet 3’s was ~ 0.463″. Obviously, bullets can be visually deceiving as to BSL!
Some might be tempted to use a bullet ogive comparator (or two) to measure bullets’ true BSL for comparison’s sake. Unfortunately, comparators don’t typically measure maximum bullet diameter and this approach can be deluding.
Note: Due to time constraints, the writer used an approximate, direct measurement approach to assess the bullets’ different BSLs. While fairly repeatable, the results were far from ballistics engineer-grade. Still, they are adequate for this example.
Photo 2: The Perils of Measuring Bearing Surface Length with Comparators
In Photo 2, two 7mm comparators have been installed on a dial caliper in an attempt to measure BSL. Using this approach, the BSLs differed sharply from the original [measurements]. The comparator-measured Bullet 1 BSL was 0.694” vs. 0.324” (original), Bullet 2 was 0.601” (comparator) vs. 0.430” (original), and Bullet 3 (shown in Photo 2) was 0.602” (comparator) vs. 0.463” (original). [Editor’s comment — Note the very large difference for Bullet 1, masking the fact that the true full diameter on this bullet starts very far back. You can use comparators on calipers, but be aware that this method may give you deceptive reading — we’ve seen variances just by reversing the comparators on the calipers, because the comparators, typically, are not perfectly round, nor are they machined to precision tolerances.]
Thanks to the U.S. Army Marksmanship Unit for allowing the reprint of this article.
Tumblers and walnut/corncob media are old school. These days many shooters prefer processing brass rapidly with an ultrasonic cleaning machine. When used with the proper solution, a good ultrasonic cleaning machine can quickly remove remove dust, carbon, oil, and powder residue from your cartridge brass. The ultrasonic process will clean the inside of the cases, and even the primer pockets. Tumbling works well too, but for really dirty brass, ultrasonic cleaning may be a wise choice.
Our friend Gavin Gear has evaluated an RCBS Ultrasonic cleaning machine using RCBS Ultrasonic Case Cleaning Solution (RCBS #87058). To provide a real challenge, Gavin used some very dull and greasy milsurp brass: “I bought a huge lot of military once-fired 7.52x51mm brass (fired in a machine gun) that I’ve been slowly prepping for my DPMS LR-308B AR-10 style rifle. Some of this brass was fully prepped (sized/de-primed, trimmed, case mouths chamfered, primer pockets reamed) but it was gunked up with lube and looking dingy.”
UltimateReloader.com Case Cleaning Video (7.5 minutes):
Gavin describes the cleaning exercise step-by-step on UltimateReloader.com. Read Gavin’s Cartridge Cleaning Article to learn how he mixed the solution, activated the heater, and cycled the machine for 30 minutes. As you can see in the video above, the results were impressive. If you have never cleaned brass with ultrasound before, you should definitely watch Gavin’s 7.5-minute video — it provides many useful tips and shows the cleaning operation in progress from start to finish.
Ultra Dry Necks After Ultrasonic Cleaning — Some Suggestions
The Ultrasonic cleaning process gets cartridge brass so “squeaky clean” that increased force may be required to seat your bullets, or they may “grab” as they go in the necks. To reduce bullet-seating effort, you may benefit from adding a little dry case lube inside the case-neck before loading (use a nylon brush). Another trick is adding a teaspoon of Ballistol lube to the cleaning solution. That provides a trace lubricant inside the necks, but does not interfere with powder ignition in any way.
The latest Gen2 RCBS ultrasonic cleaning machine has a large 6.3-quart capacity. That’s nearly 100% larger than the first generation machine in Gavin’s video. The bigger Gen2 machine, $419.99 at Precision Reloading (with FREE shipping), features a second ceramic heater and transducer to better clean brass cases and firearm parts. The LED is easily programmable, and the timer can be set for up to 30 minutes of cleaning. The original 3.2 quart-capacity RCBS ultrasonic machine, as shown in Gavin’s video, is still available for $197.99 at Midsouth Shooters. There is also another good 6-liter multi-mode ultrasonic cleaning machine, with stainless steel tank, available for $199.99 on Amazon.
Winchester’s new “Introduction to Ammunition — Ammo 101” is a four-part series including custom illustrations and information for four major ammunition categories: rifle, pistol, rimfire, and shotshell. The Ammo 101 series provides a detailed overview of centerfire rifle, centerfire pistol, rimfire, and shotshell ammunition, showcasing ammunition construction, components, calibers, and common usage. The Ammo 101 resource is free to download from Winchesters.mediaassets.com. Or, simply click one or more diagrams below. Each image will launch a large PDF which you can print or download.
TIP: Click Each Image for Full-Screen Printable PDF
Shown below are the first four ammunition information sheets prepared by Winchester. These show all the key components of cartridges and shotshells, and explain the functions. These diagrams are useful for training, and for persons getting started in reloading.
Ammo 101 Centerfire Rifle Cartridge Diagram (click for PDF)
Ammo 101 Rimfire Cartridge Diagram (click for printable PDF)
Ammo 101 Pistol Cartridge Diagram (click for printable PDF)
Ammo101 Shotshell Diagram (click for printable PDF)
About the Ammo 101 Series
The FREE Ammo 101 resources can help instructors nationwide who introduce new entrants to the shooting sports and hunting. Instructors can incorporate these resources into their training presentations, use them as handouts, or have them printed locally.
“The basics of ammunition… is what we want to deliver with the Ammo 101 series,” said Matt Campbell, Winchester V.P. of Sales & Marketing. “With millions of people across the United States starting their journey in the shooting sports as new firearm owners, providing easy-to-understand information on ammunition types is one way we can help educate our customers.”
We are re-publishing this article at the request of Forum members who found the information very valuable. If you haven’t read this Safety Tip before, take a moment to learn how you can inspect your fired brass to determine if there may be a potential for case separation. A case separation can be dangerous, potentially causing serious injury.
On the highly-respected Riflemans’ Journal blog, created by our late, dear friend German Salazar*, there was an excellent article about Cartridge Case-Head Separation. In this important article, Salazar (aka GS Arizona) examined the causes of this serious problem and explained the ways you can inspect your brass to minimize the risk of a case-head separation. As cases get fired multiple times and then resized during reloading, the cases can stretch. Typically, there is a point in the lower section of the case where the case-walls thin out. This is your “danger zone” and you need to watch for tell-tale signs of weakening.
The photo below shows a case sectioned so that you can see where the case wall becomes thinner near the web. You can see a little arrow into the soot inside the case pointing to the thinned area. This case hadn’t split yet, but it most likely would do so after one or two more firings.
Paper Clip Hack for Detecting Problems
The article provided a great, easy tip for detecting potential problems. 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. If you do this every time you reload, on at least 15% of your cases, you’ll develop a good feel for what the thin spot feels like and how it gets worse as the case is reloaded more times. And if you’re loading the night before a match and feel pressured for time — don’t skip this step!”
* Sadly, German Salazar passed away unexpectedly on June 21, 2022 at age 62. German was a great inspiration to this site who helped guide the creation of the AccurateShooter Forum. A brilliant man, expert attorney, and top-tier marksman, German will be sorely missed in the shooting sports world.
Did you know you can damage your hearing even if you are wearing the best hearing protection available? Well, have you ever heard of concussion (or concussive) hearing loss? There is no amount of anything you can put in or over your ears to protect you from concussion loss. My audiologist explained to me the concussion comes through the facial bone structure and damages the ear’s tiny bones.
Editor’s NOTE: This a very important article that explains how you can suffer inner ear damage and hearing loss even if you use quality earplugs and/or muffs. Read that again — hearing loss can happen even with typical hearing protection. This kind of concussive hearing loss can result from shooting with muzzle brakes in confined spaces. Using a suppressor (aka sound moderator) can reduce the risk of concussive hearing loss. You may not have the ability to use a suppressor, but this article explains how you should be more mindful of your hearing.
Why I Use a Suppressor (Preventing Concussive Hearing Loss)
It must have been the road noise. I thought I was having a hard time hearing my five-year-old daughter speaking to me on my cell phone because of the road noise. That old SUV was kind of loud inside. Until I switched the phone to my left ear and suddenly I could hear her just fine. Wait, what just happened? I moved the phone back to the right ear and there was that muffled voice again. That’s when I knew I had a problem.
“What?” Lots of us in the shooting community have lost some hearing along the way due to our time on the range or in the field. Those of us who hunt have certainly discharged a firearm or three without ear protection and without concern for our hearing. After all, it’s just one shot, right? How much can it hurt?
Actually, that one shot DOES hurt your hearing. Any sound over 140 dB is immediate hearing loss. It just happens to be killing a small amount of our hearing so most of us continued the practice without a care. Living with hearing loss now makes me wish I could go back 20 years and better protect my hearing. I can’t change what I did in the past, but going forward I can certainly do the most to protect the hearing I still have.
I decided to shoot about a year’s worth of matches with just braked rifles. That year is when I lost significant hearing in my right ear and some in the left. I’ve gone back to shooting only suppressed rifles whenever possible.
I shot my first suppressed firearm, a .22 LR pistol, in 2003. After a few rounds I wondered why everyone (who can do so legally) didn’t shoot suppressed? No one drives without a muffler. Why would you? Point is I immediately appreciated the hearing protection benefits of suppressors. That passion got me into the business of selling suppressors and it wasn’t long before I was one of the biggest retailers for companies like AAC, SWR, SilencerCo, Ops Inc. and others. [Editor: The author’s business, Accurate Ordnance, no longer sells suppressors. So this article is NOT a sales pitch. Mark just wanted to share his experience so others might protect their hearing.]
Did you know you can damage your hearing even if you are wearing the best hearing protection available? You’ve heard guys say, “I’ll wear plugs and muffs, so I’ll be just fine shooting that .50 BMG!” Well, ever heard of concussion (or concussive) hearing loss? Yeah, I hadn’t either. I’ll sum it up the way the last audiologist I spoke with about my hearing loss did – there is no amount of anything you can put in or over your ears to protect you from concussion loss.
A hand grenade went off right next to a buddy of mine. He lost some hearing as a result of the blast. No one is really surprised by that. I mean it is an EXPLOSION. It’s loud. Duh. But I had no idea the blast from a muzzle brake could basically hurt my hearing the same way. The doctor explained to me the concussion comes through the facial bone structure and damages the ear’s tiny bones. Same thing as what can happen through any TBI (traumatic brain injury).
I’ve owned quite a few different suppressors over the years and have shot just about everything out there. I’m still as big a fan as ever. However, I wanted to see if using a suppressor in PRS (Precision Rifle Series) and similar matches was actually a hindrance. Some people feel the added length and weight of a suppressor can make getting into some shooting positions slower or problematic. So I decided to shoot about a year with a muzzle brake instead of a suppressor. I sure regret that decision…
Getting Headaches at PRS Matches Was Warning Sign
It is fairly common in PRS matches to shoot through pipes, vehicles, inside “shoot houses” and around other obstacles that echo a rifle’s blast. I noticed I was starting to get headaches about halfway through a day of PRS match shooting. I knew the issue wasn’t hydration. I mean look, if you are peeing every other stage down at the amazing CORE range facility in mid-summer you are NOT dehydrated. So, what was causing the headaches? It wasn’t until I went back to shooting suppressed in those same environments that it became clear the little mini concussions from that muzzle brake was causing my headaches. And of course the doctors confirmed that.
Let me stop here and say I am NOT anti-brake. Muzzle brakes are useful tools and for some situations are the best tools. An aggressive brake can be more effective at reducing recoil than a good suppressor. A suppressor does add some recoil reduction, just not as much as most quality brakes. Don’t forget to factor other variables, such as caliber and rifle weight, into the equation though. For example, a 15-lb 6mm Creedmoor rifle doesn’t need much recoil reduction in the first place.
So, I started shooting matches long before the PRS even existed and always shot suppressed in those days. The suppressors made communication with a partner or RO easier and it was just a more pleasant shooting experience. On the recommendations of a few people I decided to shoot about a year’s worth of matches with just braked rifles. That year is when I lost significant hearing in my right ear and some in the left. I’ve gone back to shooting only suppressed rifles whenever possible and especially at matches. I’ve only once or twice found the extra length of the suppressor made it a little more inconvenient to run a stage, but not by much. Trust me, the points I missed were not because I took two extra seconds getting the muzzle in a port or window.
My hearing is something I value and will do everything to protect from this point forward. You’ll never again see me on a match field with an un-suppressed rifle. To me the minimal gains of running a braked rifle aren’t worth losing more hearing.
Choosing a Suppressor — What to Consider
Okay, so I have hearing loss that I can’t get back and realize I need to go back to shooting matches with a suppressor. But which one? I’ll still be shooting matches with custom fit plugs so I just need something to add a little recoil reduction and kill that concussion.
At our shop, Accurate Ordnance, we generally recommend direct-thread suppressor solutions to our customers. The main reason for that is all the problems we’ve seen with other fast-attach muzzle devices. It doesn’t take much tolerance stacking to result in accuracy issues. There are a few exceptions for us and the Rugged Suppressors products top the list. Since the Razor 762 uses a muzzle brake adapter on the rifle to attach the suppressor, I can use the same suppressor on my .223 Rem training rifle. My primary match rifles are chambered in 6mm Creedmoor and 6.5 Creedmoor and the muzzle threads on those is a standard 5/8×24. My .223 Rem training rifle has .5×28 threads on the muzzle, which is standard for that caliber. Thus, the muzzle adapter interface lets me share the suppressors between all the rifles. And on that .223 Rem training rifle I have the option of switching the end cap on any of the Rugged products to a .223 aperture size, which makes the suppressors slightly more sound efficient (meaning quieter).
Commercial Chamber Length Gauges May Not Work with Custom Chambers
Bullet 1 (L-R), the RN/FB, has a very slight taper and only reaches its full diameter (0.284 inch) very near the cannelure. This taper is often seen on similar bullets; it helps reduce pressures with good accuracy. The calculated BSL of Bullet 1 was ~0.324″. The BSL of Bullet 2, in the center, was ~0.430″, and Bullet 3’s was ~ 0.463″. Obviously, bullets can be visually deceiving as to BSL!
On the highly-respected Riflemans’ Journal blog, created by our late, dear friend German Salazar*, there was an excellent article about Cartridge Case-Head Separation. In this important article, Salazar (aka GS Arizona) examined the causes of this serious problem and explained the ways you can inspect your brass to minimize the risk of a case-head separation. As cases get fired multiple times and then resized during reloading, the cases can stretch. Typically, there is a point in the lower section of the case where the case-walls thin out. This is your “danger zone” and you need to watch for tell-tale signs of weakening.
