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This is the first post in a series that will cover the results from an epic muzzle brake field test. This represents an unprecedented, data-driven approach to evaluating the best precision rifle muzzle brakes on the market. Hundreds of hours have gone into this research, and the tests I conducted are built on advice and feedback from some of the most respected experts in the industry. This included leading manufacturers, top shooters, gunsmiths, mechanical engineers, university faculty, and defense contractors who have done similar work for the military. Thanks to all the guys that helped me with this!

I tested 20+ muzzle brakes in many ways, including:

Recoil Reduction – I was able to directly measure the entire recoil signature of each muzzle brake using high-speed sensors. I fired over 1,000 rounds of match-grade ammo through 4 different rifles, ranging from a mid-sized 6mm to the monster 300 Norma Magnum. Although the recoil cycle happens very quickly (around 1/100 th of a second), my test equipment could record up to 1,000 force data points during a single recoil cycle! So I was able to gather a lot of high-resolution data that was consistent and repeatable. I literally spent thousands of dollars on this part of the test, because I wanted to ensure I got it right. There is very little published on this subject, especially from an independent source. So I felt like this could be a valuable contribution to the shooting community.

– I was able to directly measure the entire recoil signature of each muzzle brake using high-speed sensors. I fired over 1,000 rounds of match-grade ammo through 4 different rifles, ranging from a mid-sized 6mm to the monster 300 Norma Magnum. Although the recoil cycle happens very quickly (around 1/100 of a second), my test equipment could record up to 1,000 force data points during a single recoil cycle! So I was able to gather a lot of high-resolution data that was consistent and repeatable. I literally spent thousands of dollars on this part of the test, because I wanted to ensure I got it right. There is very little published on this subject, especially from an independent source. So I felt like this could be a valuable contribution to the shooting community. Ability To Stay On Target – David Tubb helped me develop this part of the test, because he believes this is the most important aspect of a muzzle brake. Using lasers and high-speed cameras, I was able to objectively quantify how well each design helped you stay on target.

– David Tubb helped me develop this part of the test, because he believes this is the most important aspect of a muzzle brake. Using lasers and high-speed cameras, I was able to objectively quantify how well each design helped you stay on target. Noise Level – Muzzle brakes are loud, but some are louder than others … like 3-4 times as loud. I enlisted the help of a seasoned veteran from the suppressor industry to help me precisely measure how much louder each muzzle brake made a rifle. We tested in accordance with MIL-STD-1474D using calibrated military-approved equipment, and we tested the noise level at the shooter’s position. This produced some interesting results.

Then I took a lot of high-resolution photos and videos of each brake. I also collected other information about each model (including price, whether it requires gunsmithing, what calibers it is available in, etc.) to make it easy to compare them side-by-side.

Keep in mind this is a field test, not a laboratory test … and I’m not claiming it’s flawless. I did put my best effort into this being as objective, precise, and unbiased as practically possible using the best equipment I could afford. My goal with this project was to equip fellow long-range shooters with as much hard data as I could reasonably gather, so they can make more informed decisions.

Honestly, I’d been dreaming about doing this test for over a year. I ended up spending twice as much money on this test as I made off the website all of last year! But, I’ve always been in the red on this website. I don’t do this for money, I do it to learn and to help people. It’s my way of giving back to the shooting community, and promoting this sport I’m so passionate about.

I’m also hoping this helps us understand what designs are most effective. There are a ton of designs out there, and even the leading manufacturers would tell you for the most part they’re just winging it. They put thought into the design, but at the end of the day, many are just drilling holes in metal, then taking it to the range and asking each other “Well, you think that one was better?” There is virtually no data-driven aspect to design. That’s why many manufacturers were excited when I approached them about this, because they’d love to have some hard data to guide them. In fact, a few sent me prototypes of new designs to try out for them. Some are even buying test equipment identical to what I used to aid in future designs. In the Carlucci’s textbook on Ballistics: Theory and Design of Guns & Ammunition, there is a section on muzzle devices, and at the end of that section he says “Research in this field is still in its infancy …” I couldn’t agree more. I hope this research project somehow helps further our understanding, and ultimately helps each of the companies design more effective brakes in the future. If that happens, we all win.

I hope you guys find this as interesting and helpful as I have. I’m excited to share all the results with you!

Muzzle Brake Line-Up

This test was focused on muzzle brakes designed for precision rifles in 6mm through 30 caliber. I used four rifles during testing, including a 6XC, 6.5 Creedmoor, 308 Win, and 300 Norma Magnum. I may do another test in the future focused on brakes designed for AR-15’s or large magnums (i.e. 338 Lapua to 50 BMG), because both of those seem to get you in a totally different type of product. But for this test, I narrowed my focus to allow me to more thoroughly test that range of calibers the majority of precision rifle shooters are interested in.

I started by including the most popular precision rifle brakes. All muzzle brakes used by more than 2 of the top 50 shooters in the PRS are represented (see the data). I also tried to represent the wide variety of the designs that are available. Here are the muzzle brakes represented in this field test:

Why didn’t you include …?!

If you’re upset that I didn’t include your favorite muzzle brake … I’ll give you a full refund! 😉 I hope you can still learn something from the test. If I do another brake test in the future, I may ask my readers to vote on which models are included. But on this one, I wanted to test all the brakes the top shooters are using … so these likely represent the “best of breed.”

I’d beware of bold claims regarding “how much better” other brakes are compared to these. There likely are other great designs out there, but many make impressive performance claims … and some of the hard data from these tests stands in contrast to those. It’s easy to market bloated numbers like “70+% recoil reduction” without any empirical testing to back that up. I’m not trying to knock anyone, but my advice is to approach with a healthy skepticism. If it sounds too good to be true, demand the data the claims are based on. If they don’t provide it … run.

Ultimately, I hope this test gives all manufacturers info they can use to improve their designs. It provides fresh insight into the competition, shows what works well, what doesn’t seem to be working, and what precision shooters are looking for. Part of the motivation behind my thoroughness was in hopes that I’ll be able to buy an even better muzzle brake for my rifle 2 years from now! This field test has already been a catalyst for conversations, and I hope it ignites some innovation over the next year or two. It’ll be fun to see what comes out!

The Contestants

I wanted to go through each brake, point out a few notable features, and things you might keep in mind.

A couple of the things I’ll touch on are how “do-it-yourself” each brake is. By that, I mean are you able to just order it and thread it onto your barrel without the help of a gunsmith? There are two parts to that:

Requires Gunsmith To Bore Hole: Some brakes require a gunsmith to bore them to the desired caliber, and others allow you to order the caliber you want. Where I list out the calibers the brake is available in, I only include the calibers that are available with a 5/8×24 thread pattern, since that is the industry standard for calibers this test was focused on.

Some brakes require a gunsmith to bore them to the desired caliber, and others allow you to order the caliber you want. Where I list out the calibers the brake is available in, I only include the calibers that are available with a 5/8×24 thread pattern, since that is the industry standard for calibers this test was focused on. Requires Timing or Shim: Some directional brakes must be “timed” to your specific barrel by a gunsmith, so that when it’s tightened down, the ports are pointing in the right directions. An alternative to this is using some type of shim kit, crush washer, peel washer, or locking nut.

I’ll also list out the weight, length, and price of each brake. Note that those reflect the specific models/versions I tested, and all pricing is as of August 2015. Pricing is for informational purposes only, and subject to change without notice. Visit the manufacturer’s website for the latest information.

Alamo Four Star Cowl Induction Brake – Alamo Four Star is known for their rock-solid tripod and optics mounts, so it surprised me when multiple people suggested I look into the new muzzle brake they were working on. When that came from industry experts like David Tubb, it peaked my curiosity … so I contacted the guys at Alamo and included their brand new design in the test. It has some fundamental differences from any brakes I’ve seen. I had one of these in 30 caliber and 6.5mm. They should have a 6mm version available soon, but didn’t at the time. The 6.5mm brake was used for the 6mm cartridge in my tests.



I wanted to highlight its patented baffle design, because it is so unique:

You can see the 1st and 3rd baffles stop short of the bore, while the 2nd and 4th baffles come all the way in and have a little cup to help divert gas. Mark Deros, the designer of the brake, believes when those 1st and 3rd baffles are machined away from the bullet path, it allows more gas to expand and hit the 2nd and 4th baffles, which he calls “wind sails.” Most of the work is done by the 2nd and 4th baffle. That’s a novel approach.

Requires Gunsmith To Bore Hole: No (available in 6mm, 6.5mm, 30 Cal)

No (available in 6mm, 6.5mm, 30 Cal) Requires Timing or Shim: Yes

Yes Weight: 6 ounces

6 ounces Length: 2.9 inches

2.9 inches Price: $139

Update: The Alamo Four Star muzzle brake design was purchased by Masterpiece Arms, and is now sold as the MPA Cowl Induction Muzzle Brake.

American Precision Arms Little B* and Fat B* – These were the most popular muzzle brakes among the top 50 shooters in the PRS in 2014. They look like very effective designs, and the Gen II version includes a nice integral locking nut that I will talk more about later. The B* actually stands for bastard, but honestly I don’t like cussing and try to keep my website PG-13 … so I’m not going to say that name again. I had Little B* brakes in 6mm, 6.5mm, and 30 caliber. The Fat B* is primarily designed for large magnum cartridges, so they don’t make it in 6mm or 6.5mm. I only tested it on the 30 caliber cartridges.

APA’s integral locking nut is a very slick feature. There is essentially a locking nut built into the brake to make timing painless. No need for shim kits, crush washers, or Loctite. You just screw on the brake, and then adjust the integral locking nut and a crescent wrench to time the brake to the barrel. It is simple, and gives you a clean look, without the little gap you see with all the shim approaches. It makes moving the brake from one rifle to another simple, and you don’t give up much (if any) in terms of aesthetics.

You have the option of a Gen 1 and a Gen 2 version of this brake. The only difference is the Gen 2 features the integral locking nut. The Gen 1 is like most other brakes in this test, in that it must be “tuned” to a specific barrel or used with some kind of shim kit. This brake is also available in a huge array of calibers.

APA Little B* Details:

Requires Gunsmith To Bore: No (available in 22 cal, 6mm, 25 cal, 6.5mm, 270 cal, 7mm, 30 cal, 338 cal)

No (available in 22 cal, 6mm, 25 cal, 6.5mm, 270 cal, 7mm, 30 cal, 338 cal) Requires Tuning or Shim: No (Gen II model I tested doesn’t, but Gen I does)

No (Gen II model I tested doesn’t, but Gen I does) Weight: 4.2 ounces

4.2 ounces Length: 2.2 inches

2.2 inches Price: $160 (That is the price for the Gen II model I tested, the Gen I version is $125)

APA Fat B* Details:

Requires Gunsmith To Bore Hole: No (available in 7mm, 30 cal, 338 cal)

No (available in 7mm, 30 cal, 338 cal) Requires Tuning or Shim: No (Gen II model I tested doesn’t, but Gen I does)

No (Gen II model I tested doesn’t, but Gen I does) Weight: 7.1 ounces

7.1 ounces Length: 3.3 inches

3.3 inches Price: $185 (That is the price for the Gen II model I tested, the Gen I version is $150)

Badger Ordnance FTE Muzzle Brake – Badger is quickly becoming a legendary brand, and they were the 2nd most popular brake among the top 50 shooters in the PRS this past year. These are also standard choices on precision rifles made by Surgeon Rifles and GA Precision, and their recommendations carry a lot of weight. This brake requires gunsmithing, so you could bore it to any caliber you wanted. I only had a 30 caliber version of this brake. This brake design is a little different, because the barrel has be contoured to a very specific diameter for it to work with it’s clamp-on mount. So I wasn’t able to use it on all of the rifles.



Requires Gunsmith To Bore Hole: Yes

Yes Requires Tuning or Shim: No

No Weight: 8.9 ounces

8.9 ounces Length: 3.0 inches

3.0 inches Price: $150

Center Shot Rifles Blast Tamer – These muzzle brakes were designed by Jim See, a veteran and accomplished shooter in the precision rifle world. He is one of the few guys who has finished in the top 20 overall every year since the PRS’s inception. These Blast Tamer brakes are also very popular among the top shooters in the PRS. Jim is a sharp guy, and I know he put a ton of thought into his design, so I was excited to have his brakes represented. I included a few different variations of the Blast Tamer design, based on Jim’s recommendations. The mini was bored to 6mm, the clamp-on came ready to go on a 6.5mm, and the big 4 port brake was bored for the 30 calibers.



Requires Gunsmith To Bore Hole: Yes, except clamp-on design which is available in 6.5mm or 30 caliber

Yes, except clamp-on design which is available in 6.5mm or 30 caliber Requires Tuning or Shim: Yes, except clamp-on design

Yes, except clamp-on design Weight: Clamp-On = 5.0 oz., Round = 3.5 oz., 4-Port = 6.3 oz.

Clamp-On = 5.0 oz., Round = 3.5 oz., 4-Port = 6.3 oz. Length: Clamp-On = 2.1 in., Round = 1.9 in., 4-Port = 2.6 in.

Clamp-On = 2.1 in., Round = 1.9 in., 4-Port = 2.6 in. Price: Clamp-On = $115, Round = $80, 4-Port = $90 (includes shipping)

Holland Radial Baffle Quick Discharge Muzzle Brakes – Darrell Holland has made muzzle brakes since the 70’s, which is way before any of these other guys. His designs have inspired most of the models you see on the market, and he continues to come out with improved versions. He is truly a pioneer in this area. His latest innovation is the Radial Baffle brake, which Darrell says “trap the gas and divert it around the shooter in a rearward direction, increasing the recoil reduction over a 90 degree exhaust pattern. Radial baffles increase the surface area for the gas to work against, providing exceptional performance.” I had caliber-specific versions for 6mm, 6.5mm, and 30 caliber in both the 0.985” profile and 1.25” profile versions of this brake.



Requires Gunsmith To Bore Hole: Yes

Yes Requires Tuning or Shim: Yes

Yes Weight: 985” = 4.0 ounces, 1.25” = 6.4 ounces

985” = 4.0 ounces, 1.25” = 6.4 ounces Length: 2.6 inches

2.6 inches Price: $170

Impact Precision Muzzle Brake – These muzzle brakes are made by Wade Stuteville and Tate Streater, who are both accomplished shooters in the PRS. Wade was shooting competitions when dinosaurs still roamed the earth, was the 2012 PRS Overall Points Champion, and is very well-respected in the precision rifle community. They came out with this brake design last year, and it is already one of the most popular muzzle brakes among top shooters in the PRS. This brake is available in caliber-specific options, and I had one in 6mm, 6.5mm, and 30 caliber.



Requires Gunsmith To Bore Hole: No (available in 6mm, 6.5mm, 30 caliber)

No (available in 6mm, 6.5mm, 30 caliber) Requires Tuning or Shim: No

No Weight: 3.8 ounces

3.8 ounces Length: 1.9 inches

1.9 inches Price: $105

JEC Customs Recoil Reduction Muzzle Brake – This has been a perennial favorite among PRS shooters, and is a very streamlined, elegant design. I used this brake last year on my quest to build the ultimate precision rifle. With “Recoil Reduction” in the name, I had to include it. 😉 I owned a 6mm version of this muzzle brake. I tried to contact JEC for 6.5mm and 30 caliber brakes for these tests, but wasn’t ever able to get in touch with them.



Requires Gunsmith To Bore Hole: No (available in 22 cal, 6mm, 6.5mm, 7mm, 30 cal)

No (available in 22 cal, 6mm, 6.5mm, 7mm, 30 cal) Requires Tuning or Shim: Yes

Yes Weight: 4.1 ounces

4.1 ounces Length: 2.2 inches

2.2 inches Price: $110

JP Large Profile Compensator – JP claims this design should have performance on par with the JP Recoil Eliminator (the next brake in the line-up), but with a slimmer, more conventional appearance. These are slightly larger than their popular 3-gun compensators, which provides a little more performance without a radical aesthetic departure. JP only offers this brake in 30 caliber (at least for the appropriate thread).



Requires Gunsmith To Bore Hole: No (available in 30 cal)

No (available in 30 cal) Requires Tuning or Shim: Yes

Yes Weight: 5.4 ounces

5.4 ounces Length: 2.8 inches

2.8 inches Price: $100

JP Recoil Eliminator – This iconic brake is often lovingly called “the Tank,” because it looks like the T-style muzzle brake on a World War II tank. It is easy to spot. While the aesthetics may be hard for some to get past, I wanted to know just how effective it was compared to these other designs. JP only offers this brake in 30 caliber (at least for the appropriate 5/8×24 thread).



Requires Gunsmith To Bore Hole: No (available in 6mm and 308)

No (available in 6mm and 308) Requires Tuning or Shim: Yes

Yes Weight: 6.1 ounces

6.1 ounces Length: 2.4 inches

2.4 inches Price: $100

OPS Accuracy Tuning Brake – I’m clearly a research nerd, and when I built my first custom rifle … I did a ton of research on every part. After reading a ton of forum threads, this is the brake I bought for that rifle. I was excited to see how the empirical data stacked up to the hype I read online. OPS would never respond when I reached out to them, so I only had my personal brake to test, which was 30 caliber. Note: I did have this brake Cerakoted. You can’t buy the brake in the color shown.



Requires Gunsmith To Bore Hole: No (available in 6mm, 30 cal, 338 cal)

No (available in 6mm, 30 cal, 338 cal) Requires Tuning or Shim: Yes

Yes Weight: 3.0 ounces

3.0 ounces Length: 2.7 inches

2.7 inches Price: $116

Seekins Precision ATC Muzzle Brake – This is a very unique design that I noticed when 1 of the top shooters in the PRS used it in 2013. I originally didn’t plan to include this brake, but a friend handed me theirs one day. It seemed different from traditional muzzle brake designs, almost a mix between a Vias brake, a Holland brake, and something completely new. I was intrigued. This is only offered in 30 caliber (at least for the appropriate 5/8×24 thread).



Requires Gunsmith To Bore Hole: No (available in 30 caliber)

No (available in 30 caliber) Requires Tuning or Shim: Yes (includes a knurled locking nut to make timing easier)

Yes (includes a knurled locking nut to make timing easier) Weight: 3.5 ounces

3.5 ounces Length: 2.4 inches

2.4 inches Price: $129

Shrewd Muzzle Brake – This is the bestselling muzzle brake on Brownell’s. If that wasn’t enough, I also wanted to include at least one unidirectional design, to see how effective they were compared to these other designs. Unidirectional just means it ports gas in every direction. Many precision rifle shooters avoid this type of design because it tends to kick up dirt and debris when shooting from the prone position. Hunters like the look of it, because it can be blended to match the contour of the barrel. But how effective is it compared to these other designs? I’ve heard a lot of guys speculate, but I wanted to see the hard data. The company that makes this wasn’t interested in sending a brake to test. They actually told me “We don’t have any problem selling our brakes.” So, I bought one out-of-pocket, bored it to 30 caliber, and used it on all the tests.



Requires Gunsmith To Bore Hole: Yes

Yes Requires Tuning or Shim: No

No Weight: 3.8 ounces

3.8 ounces Length: 2.6 inches

2.6 inches Price: $60

Surefire SOCOM Muzzle Brake – This is the Thread-Over Muzzle Brake (TOMB) designed to work with the popular line of Surefire suppressors. Although Surefire suppressors don’t seem to be as popular in the precision rifle world as some other brands, I do see some shooters running these muzzle brakes on high-end rifles. This is only offered in 30 caliber (at least for the appropriate 5/8×24 thread).



Requires Gunsmith To Bore Hole: No (available in 30 cal)

No (available in 30 cal) Requires Tuning or Shim: Yes

Yes Weight: 3.3 ounces

3.3 ounces Length: 2.7 inches

2.7 inches Price: $150

Thunder Beast (TBAC) Compact Brake – This is the Thread-Over Muzzle Brake (TOMB) designed to work with the new line of Thunder Beast suppressors, which are the most popular suppressors among the top 50 PRS shooters. It is a relatively small brake, and I thought including a compact brake like this would help us understand how size plays into the equation. This is only offered in 30 caliber (at least for the appropriate 5/8×24 thread).



Requires Gunsmith To Bore Hole: No (available in 30 cal)

No (available in 30 cal) Requires Tuning or Shim: Yes

Yes Weight: 2.1 ounces

2.1 ounces Length: 1.7 inches

1.7 inches Price: $125

TriDelta T6 Muzzle Brake – During testing, I referred to this as “The Amazon Special.” Years ago, a friend of mine heard of guys using muzzle brakes and thought he’d try one out. He didn’t have clue what to look for, so he just went on Amazon and ordered one. He said it was $20-30 at the time. He has upgraded since then, but still had this in a drawer. We thought it’d be fun to see what kind of performance you could expect from such a “cost-effective,” impulse buy. It does have great reviews on Amazon. 😉



Requires Gunsmith To Bore Hole: No (available in 30 cal)

No (available in 30 cal) Requires Tuning or Shim: Yes

Yes Weight: 4.7 ounces

4.7 ounces Length: 2.9 inches

2.9 inches Price: $55

Tubb Precision Muzzle Brake – David Tubb has won more NRA National Championships than any other competitive rifleman in history. This is his own design, and it has a few distinctive features. First, it’s specifically designed to be “tuned.” In the 22 LR rimfire benchrest world (yes, Virginia, there is such a thing), barrel tuners are commonplace. They don’t handload rimfire ammo. Since they can’t tune their ammo to their rifle, they’ve found a way to tune their rifle to factory ammo. David brought that same idea to centerfire rifles. The included lock nut allows you to move the muzzle brake in and out on the muzzle to tune vibrational nodes. David says that has been proven to enhance accuracy. You can also adjust the brake rotationally to eliminate sideways or angular movement of the muzzle during firing.

Virtually all of these brakes were available with a 5/8×24 thread, which has become the standard for muzzle devices in these calibers. That was true for all of them except the Tubb Precision Muzzle Brake, which is only available in a 3/4×28 thread. I tried to find a thread adapter for that, but after calling multiple manufacturers … I became convinced it didn’t exist. So I had to barter with a gunsmith to build a custom thread adapter so I could include the Tubb brake. It required a skilled gunsmith to ensure it was 100% concentric and it was labor intensive (read expensive), but I’m glad I found a way to include that brake in the test.



Requires Gunsmith To Bore Hole: No (available in 6mm)

No (available in 6mm) Requires Tuning or Shim: Yes (comes with really nice locking nut)

Yes (comes with really nice locking nut) Weight: 3.7 ounces

3.7 ounces Length: 2.0 inches

2.0 inches Price: $120

West Texas Ordnance Muzzle Brake – This is a new design by a couple of precision rifle gunsmiths and competitive shooters in Texas. At first glance, it looks like the JEC design, but it has one elongated port and several other design changes like a recessed target crown, slimmer profile, 90° baffles for less blowback, etc. It is a really sharp-looking brake, and a little more compact than most of the others represented.



Requires Gunsmith To Bore Hole: No (available in 6mm, 6.5mm, 7mm, 30 cal)

No (available in 6mm, 6.5mm, 7mm, 30 cal) Requires Tuning or Shim: Yes

Yes Weight: 2.0 ounces

2.0 ounces Length: 2.1 inches

2.1 inches Price: $110

So that’s our line-up. I’m sure there are others that could have or maybe even should have been included, but since I can’t test an infinite amount of muzzle brakes in my spare time … these are what I landed with. I did try to reach out to a couple other manufacturers like Vias Arms, but they weren’t interested in being in the test. Their design appears very similar to the Shrewd brake, so I’d expect the performance to be similar. A few manufacturers weren’t interested in sending me one of their brakes to test, so I ended up buying a few of these out-of-pocket or borrowed them from friends. Overall, I think this is a well-rounded group of muzzle brakes designed for precision rifles.

Several manufacturers ship their muzzle brakes with an undersized hole, which requires them to be bored by a gunsmith to the desired caliber. Boo! That can cost $100 per brake … but luckily, West Texas Ordnance was excited about me doing this test, and they wanted to help me make it happen. So they were willing to donate 6 hours of gunsmithing to get all of these brakes ready to go. If they wouldn’t have done that, I couldn’t have included a few of these brakes. Thank you guys!

Pricing Summary

Here is a price break-down of the different models included (as of August 2015). You can see the majority were in that $100-125 price range, with a few being over and a couple under.

How Results Will Be Published

There are many aspects that go into a muzzle brake’s performance, so I conducted a lot of different tests. I gathered a ton of data. Instead of disappearing for a couple of months while I write all this content, I’m planning to publish the results for different aspects as I work through the data. That should get them in your hands faster, but because I’m still crunching all the data, creating the charts/graphics, and writing the content … there will be a week or two between each post. Please be patient with me.

I promise I’m as excited to get you the data as you are to see it! 😉

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Other Post in this Series

This is just one of a whole series of posts related to this muzzle brake field test. Here are links to the others:

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