When it comes to sound, there are two key concepts we need to understand: Sound Intensity and Perceived Loudness. If a brake was 150% louder than the bare muzzle (which would be 2.5 times as loud), it would receive a rating of 0. Most brakes hovered around 100%, which means they sound twice as loud as the rifle with a bare muzzle. Screws onto standard AR-15/M4/M16 ½" x 28 threaded barrels (with .223 / 5.56 bore). Colonel Mustard muzzle brake. It’s a little lighter and a little shorter, but the sound suppression and recoil reduction isn’t a lot different than the Ultra 9. I wish it helped you stay on target more, and wish it had better recoil reduction … but it is what it is. This is just one of a whole series of posts related to this muzzle brake field test. That means from behind the rifle, there were some brakes that sounded about twice as loud as other muzzle brakes. I was certainly glad I had a veteran with me when I tested all this stuff, because even as an engineer … I underestimated how complex the science of sound is! It’s been interesting quantifying all this stuff. 1.41 times as loud). CMMB242556MB. If you don’t have integrity, nothing else matters.”, “Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.”. In fact, there are calculators designed to do just that. I’m nothing special. Made of stainless steel that then receives a black Nitride coating. £165.80 * Compensators & Muzzle Brakes. CMC4-AS-BK223MB. For example, ability to shoot accurately over a shooting session (day). We all know one of the biggest downsides of a muzzle brake is how loud they are. So I asked Zak to throw in his sound meter when he headed down, and we spent a full morning measuring the sound signatures of all the different models. Any thoughts on doing 5 vs 7 vs 9 in recoil? I’m out on VAIS. CMMB11522314RH. I also measured the Tubb Precision Muzzle Brake to the side of the 6XC, and it metered at 165.7 dB, which is 2.3 dB more intense than the bare muzzle. To me, if I’m primarily concerned with performance, I’m going muzzle brake. Screws onto standard M14 x 1 threaded barrels (with 5.56mm bore) - as used on the VZ. – Cal, So did you quantify the difference in recoil/sound between the Ultra 7 and the Ultra 9 enough to decide which you want? Field Tests & Studies, Reviews & Field Tests, Suppressors & Muzzle Brakes If noise level is one of the big things you’re concerned about, the suppressor is clearly the way to go. I did try to contact Vias to see if they would like to be part of this, and they would never respond to my multiple emails or phone calls. Black. Trading Hours. CMMB398MB. © Copyright 2021 PrecisionRifleBlog.com, All Rights Reserved. Noise-induced hearing loss is cumulative and permanent. Huge efficiency bonus for that little extra length and weight. Includes crush washer and jam nut. Here’s my analogy: If you got hit by a vehicle at 70 mph, it is going to hurt … regardless of whether it was a compact Kia or a big truck. Colonel Mustard muzzle device. 07h00 - 15h00 Mon - Fri 07h00 - 13h00 last Friday of the Month Saturdays - test products at shooting range There seem to be a lot of pitfalls or unintended consequences related to the equipment and setup that can skew the results. Since most of us can’t afford to hire an independent test lab, we’re left with our ears, published figures, and the scant independent studies made available to the public. In return, I bought Zak a steak and measured the recoil reduction of all his new suppressors. I’ve thought some of the same things through this study. You bet! Colonel Mustard muzzle brake. For example, mil-spec testing is typically done 1 meter to the side of the muzzle, but our sound meter was 1.524 meters to the side of the muzzle (to keep from pegging the 170 dB max). -Harrell Style Muzzle tuner-Weighs 8oz-Clamps to the muzzle of your barrel-Must be Bored to fit barrels from .750" to 1.010" Dia.-Fill out Barrel Diameter Below to fit to your barrel Both OSHA and MIL-STD-1474E require hearing protection if sound pressure levels are 140 dB or more (for “impulse” noises like gunfire). Keep in mind this is a field test, not a laboratorytest ⦠and Iâm not claiming itâs flawless. Thankfully your precious data gives as a bit firmer ground to speculate on and for further tests. A difference of 10 dB means the sound is 10 times more intense, in terms of acoustic energy. Maybe there are enough buyers for a slightly modified APA-type muzzle brake with a blast deflection device in form of tube around it. Colonel Mustard muzzle brake. So, once again … there isn’t a “right” choice. This is the '4 Gill' design - a very distinctive longer profile with 4 angled-back gills on each side together with 2 'nostrils' at 10 and 2 o'clock. The quality of these brakes is on par with the brakes we carry from our Canadian-made suppliers. Compatible with barrels having a bore diameter of .308 or less and with 5/8"x24 threading. The sound suppression on both are “good enough” for me (totally a personal opinion though). The Center Shot Rifles Blast Tamer and Holland Radial Quick Discharge Muzzle Brake were good at recoil reduction, and not the worse in terms of loudness. Black. For more info, check out. I did find a significant correlation between sound level and recoil reduction. The widely acclaimed KDF Slim Line muzzle brake is not only the most effective brake on the market, but it also looks great on your rifle. So I just wanted to thank you and say ‘Son, you found your calling please keep at it’. 1/2"x 28 Threads, .223/5.56. It seems like there are a few things suppressors do better than most brakes: Reduce noise (near the point where you don’t need hearing protection), reducing the pressure shockwave at the shooters position (especially important if you’re in an enclosed place or shooting next to others), and have that exotic, James Bond cool factor. Includes crush washer and jam nut. I can tell you it made a huge difference in recoil and the sound level didn’t seem to go up as much as other brakes. Screws onto standard 5/8" x 24 threaded barrels (with .308 / 7.62 bore). Educated consumers are powerful. Includes removable shell/diverter, crush washer and jam nut. TCO HB 308 BL C. This is the '4 Gill' design - a very distinctive longer profile with 4 angled-back gills on each side together with 2 'nostrils' at 10 and 2 o'clock. The Blast Diverter has a slender and highly efficient muzzle brake that is threaded to accept the included screw-on 'shell' that, when attached, directs most of the muzzle blast and noise forwards! You can see there is a 43 dB difference from the quietest suppressor to the loudest muzzle brake. If you’re using a brake, please protect your ears, and pass that message on to your shooting buddies. Do you think it would be possible to create a graph that includes loudness rating (0-10), recoil reduction rating (0-10), and rating for ability to stay on target (0-10)? Screws onto standard AR-10 5/8" x 24 threaded barrels (with .308 / 7.62 bore). CMMB115223MB. In our shooting group (FL) some of us think that you can walk on water (I believe you can) :). The quality of these brakes is on par with the brakes we carry from our Canadian-made suppliers. Grid List. Who knows, maybe new products will become available in the not so distant future. Screws onto standard AR-15/M4/M16 ½" x 28 threaded barrels (with .223 / 5.56 bore). So a difference of 40 is 4 sets of 10, which is 4 doublings … 2×2×2×2 = 16. They were reasonably concerned that it was a fair test, but after I satisfied that … they were all about it. M11 SEVERE-DUTY MUZZLE BRAKE 6.5 CALIBER. Since they make the claim it would be nice if you could somehow manage to find some way to include them in this. He was interested in gathering some hard data on their recoil reduction, and even plans to create a similar recoil test system to help with future product development. Colonel Mustard muzzle brake. My first long distance rifle is a Remington 700 223 vsf with a 1/12 twist. But you can also see that the order isn’t perfect, so there are some brakes that provide more recoil reduction compared to the increased loudness you have to endure … and there are some that go the other way (they’re unusually loud and don’t reduce recoil much). For these tests, we primarily used a 308 Win with a 20” barrel firing Federal Premium 168gr Sierra MatchKing Gold Medal factory ammo. Gen 2 Self Timing Muzzle Brakes The Gen 2 Series of brakes started where the Gen 1 left off. Now the 5″ model loses a lot, but there isn’t a huge difference from 7 to 9. The quality of these brakes is on par with the brakes we carry from our Canadian-made suppliers. Yes, I realize that is 2 DB under the bare muzzle. Made of stainless steel that then receives a black Nitride coating. Installations take about 30 seconds a I never had thought about that before he mentioned. Your ears can hear everything from your fingertip brushing lightly over your skin to a loud jet engine. If we just start at the top, you can see the OPS muzzle brake was the “quietest” of the batch. With larger calibre, long, heavy or tactical styled firearms a large, aggressive muzzle brake can really complete the look of the rifle. The quality of these brakes is on par with the brakes we carry from our Canadian-made suppliers. Screws onto ½" x 20 threaded barrels (with .223 bore). Colonel Mustard muzzle brake designed for 6.5 Creedmoor / 6.5 Grendel. Breacher Muzzle Brake- Black Aces Tactical Bullpup Muzzle Brakes. Here's everything you need to know about removing and installation a flash hider or muzzle brake on your firearm. That would actually put both of those brakes side-by-side at around 161 dB. Whilst made overseas, the quality of these brakes is almost on a par with the brakes we carry from our Canadian-made suppliers. The quality of these brakes/devices are on par with the brakes we carry from our Canadian-made suppliers. Includes crush washer and jam nut. Thread Size: 7/8 X 9 Click Image for Details. The quality of these brakes is on par with the brakes we carry from our Canadian-made suppliers. Includes crush washer and jam nut. Colonel Mustard muzzle device. Unauthorized use and/or duplication of this content, data, or other materials is strictly prohibited without prior express and written permission from the author. Here is a table showing how changes in measured sound level would apply to both measurements: A difference of 1 dB is the just-noticeable difference (JND) for the normal human ear (source), although that may be imperceptible by some people. Magnum. CMMB314SSBKMB. Pingback: Muzzle brakes for rifles. There seems to be a correlation between how loud a brake is, and how well it reduces recoil. Colonel Mustard muzzle brake. Blake. CMMB243308MB. That’s one of the highest compliments anyone has ever paid me. This allows our customers to install the brake themselves at home. Colonel Mustard muzzle brake designed for .308 and 7.62 (or smaller) calibres. Colonel Mustard muzzle device. The brakes are ordered by their loudness rating, but you can see most of the low recoil reduction ratings are towards the top and most of the high ones are towards the bottom. —-. From the shooter’s position it was 148 DB. Superb job. When we measured the sound level from the side, there was only a difference of less than 2 dB from the quietest brake to the loudest. 58 and derivatives, such as the CZ 858 - this is a Right Hand (RH) thread. We came up with a solution for the shooter that has been a game changer. Alibaba offers 28 Muzzle Brake Suppliers, and Muzzle Brake Manufacturers, Distributors, Factories, Companies. The muzzle brake has holes in the top and the sides of the muzzle brake. CMMB246308. The quality of these brakes is on par with the brakes we carry from our Canadian-made suppliers. VMAC45 Pistol Muzzle Brake. At least that is what I’m learning through this whole process. 24 muzzle devices for .30 caliber are tested for recoil reduction on a Lancer Systems L30 Heavy Metal .308 (AR-10 / SR-25). If any of the PRS pros were using a VAIS brake, it might be different … but they aren’t (see the data). The design challenge is to reduce the recoil without putting excessive blast pressure on the vehicle. He simply pursues his vision of excellence at whatever he does, leaving others to decide whether he is working or playing. Thanks for chiming in. Screws onto standard AR-10 5/8" x 24 threaded barrels (with .308 / 7.62 bore). VMAC .45ACP Fake Suppressor W/ heat shield Muzzle Brakes. The Surgeon rep said that most people can take the recoil all day, but nobody is immune to that pressure shockwave from the blast. Want to be the first to know when the next set of results is posted? That resulted in almost all the brakes with angled baffles metering louder than those with straight baffles. Screws onto standard 5/8" x 24 threaded barrels (with .308 / 7.62 bore). That’s a big difference!” – HowStuffWorks.com. CMMB163223MB. Another question I’d love to see explored is how people perceive recoil, IE, a perceptual recoil model. But, that doesn’t mean 10 dB is 10 times louder. Screws onto M14 x 1 Right Hand threaded barrels (with 7.62 bore). CMMB119308MBa. Wow, that’s awesome, Jack! Easy To Install - Fits Standard 1/2"x 28 Threads .223 5.56 ⦠I would have used it more if I’d had it. Did you happen to look at any other sound characteristics (e.g., duration, peak frequency, etc)? Includes removable shell/diverter, crush washer and jam nut. CNC Machined High Quality Steel Phosphate Finish Compensator - proven to reduce muzzle climb to allow more rapid on-target shooting. Because the range of possible sounds is so huge, the decibel scale is different from most. I bet others were wondering the same thing. CNC Machined High Quality Steel Phosphate Finish Compensator - to reduce muzzle climb to allow more rapid on-target shooting. The Vias brake is similar to the Shrewd and Seekins Precision. Colonel Mustard muzzle brake. Black. Do you have the individual db reading for the 9, 7, and 5 ultra? Based on my measurements, the Ultra 9″ is about 10% better at reducing recoil than the Ultra 7″. I’m with you. I don’t have a lot more data than that to publish right now. Includes removable shell/diverter, crush washer and jam nut. Maybe there is a market for something between a muzzle brake and suppressor. Includes crush washer and jam nut. Remember, psychoacousticians tell us 10 dB is usually perceived to the human ear as twice as loud. I try to keep those things in mind and live them out. Includes crush washer and jam nut. Colonel Mustard muzzle device. If I ever do a test like this again (and I’ve thought about doing it for suppressors), I’ll be in touch. Great article and thanks for it! Thanks, Dale! I did test a TBAC Flash Hider, which is similar. Colonel Mustard muzzle brake. Depending on your budget, a Ruger Precision Rifle would be a great option, or if your budget is tighter I usually recommend a Savage rifle. I do know we need to take care of our service men and women; if it’s not already, electronic hearing aid-type ear pro (e.g. Screws onto standard 5/8" x 24 threaded barrels. Made of stainless steel that then receives a black Nitride coating. Hi Cal, Great read. I will also have to print it out and digest it over several days (or maybe a little longer). Includes crush washer and jam nut. This series with it’s hard-won data clarifies some aspects and raises quite a few new questions. The more you know, the more you realize how much you don’t know. That’s just not the right way to treat people, regardless of whether they were interested in being part of this test or not. I’m a big quote guy, so I can’t resist sharing two: “If you have integrity, nothing else matters. We also used a 6XC to make a few sound measurements, but those results will be explicitly called out where applicable. It all depends on your personal preferences and the specific application.
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