I like small groups when I hand load, but but like to shoo... Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. We dont talk much about physical limitations in this sport but they are an ever present and growing concern. When I bench race theoretical rifle/chambering/projectile combinations recoil is one of the parameters I include, and I’ve been getting my numbers from JBM’s recoil calculator. The answer to both, I think, lines up with choked flow. It isn’t fun dealing with that stuff. You can see the suppressor isn’t as effective at reducing recoil as many of the muzzle brakes, finishing in the bottom half of the pack. I’m glad you find the approach helpful. Great point, John. SHOT Show 2018: Really Right Stuff’s New Products, Online Precision Rifle Training from Top Shooter, Jake Vibbert, Extreme Long Range Tips 2: Spotting Shots & Ranging, Wyoming ELR Scopes & Mounts – What The Pros Use, Extreme Long Range Tips 1: Optics & Mounts, How To Measure The Distance To The Lands On Your Rifle Barrel, Alamo Four Star Cowl Induction Muzzle Brake, find quality match-grade ammo for around $1.20/round in 6.5 Creedmoor, JEC Customs Recoil Reduction Muzzle Brake, http://www.thetruthaboutguns.com/2015/04/jeremy-s/ar-15-muzzle-brake-shootout-2/, How to measure the effectiveness of a muzzle brake? Precision muzzle brake indexing is now a possibility with our jam nut. I’ve had mine for a little while, but I’ve heard a couple people struggling to get orders recently. You bet, Brian. There isn’t a lot of time left in the day to process apparel. Glad this aligns with your experience. I was a little surprised by the separation too, but I think a large part of that is the angle of the baffles. Cerakote ODG AR-10 / 308 Shark Muzzle Brake + FREE Crush WasherCNC Machined High Quality Steel Heat Treated Works On 308 Model 10, LR308, 7.62x39 Uppers, 300 AAC, 6.5 SPC, and most other 30 … The results are based on the average of multiple shots fired with each muzzle brake. A suppressor is limited on the amount of gas it can capture (based on the volume of the can), and eventually all the gas has to exit the suppressor along the same path as the bullet. © Copyright 2021 PrecisionRifleBlog.com, All Rights Reserved. The rifle I used had a 22” fluted Heavy Palma barrel, which launches the 140gr bullet at 2800 fps. I’m sure you’re sick of hearing this, but as usual great work! 9AM-5PM CST Sun (Chat & Email Only). Out of stock. This test was a little over the top, but hopefully it will help advance muzzle brake designs by showing us what works best. They’re pretty amazing. Not only does the muzzle brake have to be bored to the proper caliber by a gunsmith … you may also have to pay the gunsmith to contour the barrel to the proper diameter at the muzzle for it to work. What was the recoil in absolute terms for the 16lb 6XC/105 rig vs the 14lb 6.5Creed/140 rig, without any muzzle devices? Excellent work as usual. I actually didn’t test to see if there was zero shift between brakes. … Recoil reduction is the name of … I wish I could have tested it on all the rifles. Like would an effective 308 brake mimic the recoil of a 243? Being a scientist i appreciate i appreciate the effort you have gone to, to provide us nuckleheads with sound information. They actually have a little better performance than the 30P-1 design, but it should give you a context for what you can expect from what I feel like is the best suppressor money can buy. So in our cases, the delta pressure is so high that we get choked flow and the biggest limitation is size of our holes. Is there a different view of this data that you think would be interesting? Now, let’s move on to our next rifle, the 6.5 Creedmoor. Better be careful including JEC Custom products in your evaluations. It just takes more force to move the direction of aim, so I can hold more steady. Cheers. I was excited to see how the empirical data stacked up to the hype I read online. Categories: AR-308, Muzzle Devices. I actually already did that in a previous post. I have come to believe that at the end of the day my old bones will be grateful to you and your research by allowing me to reach the apex of my ability with a minimum of physical discomfort. But, for the sake of transparency, here are the calibers of the brakes represented in the data above: The only brake I wasn’t able to test on the 6XC was the Badger Ordnance FTE Muzzle Brake. I just try to be as transparent and objective and open as possible, but that still brings out an ugly side of people. You bet, Eric! Absolutely, Steve. That’s why so many fail. And that is one of the reasons I focused on precision rifle brakes, instead of those popular in 3 gun competitions. He may be going through some growth pains or personal stuff. silencerco (in stock) 5.0 (1) ar 308 epsilon 762 muzzle brakes. Out of Stock! I honestly don´t know how you do it, I have done a few tests of optics and since I read your optics test I realized that I should stop and re-think my approach to testing in general. I appreciate you chiming in to help us understand the physics of what is going on with the caliber-specific brakes. I find your methods and approach very impressive. That is a Thunder Beast (TBAC) 30P-1 9” Suppressor I personally own. Good work! I think (hope) I can shed some light on why caliber specific brakes didn’t do much worse. So I wanted to present that data independently of one another, so people could draw their own conclusions based on their circumstances and personal preferences. This rifle is good representative of a typical rifle you’d see being used by the top shooters in the Precision Rifle Series, in terms of weight and configuration. Patriot Ordnance Factory, 308 Triple Port Muzzle Brake, 5/8 X 24 Rh, Black Finish 309POF USA has positioned itself through superior engineering and design in making the AR platform the absolute best … each. Fast & Free shipping on many items! Well, that gets complicated with all the restrictions around them. I’m just trying to work through all this data right now, and then I’ll figure out where that will fit into the schedule. It’d just be putting up the money and building a couple things. Most muzzle brakes simply screw on the threaded part of the muzzle. SKU: OP-COMP-762. This brake is very effective at mitigating recoil. The second issue I … Unauthorized use and/or duplication of this content, data, or other materials is strictly prohibited without prior express and written permission from the author. Zak has all the data that we collected, and I think he plans to publish all of it as well. Thanks for the encouragement! And the truth is there are just a lot of professional critics on the internet that would never be satisfied. Thunder Tech There are some really great guys in this industry that have helped me out. vg6 precision (in stock) 5.0 (1) hellfire muzzle brake. The reason for design constraints like this has to do with their intended user, which is the military. Many are actually worse (especially if they’re shorter), and there may be a few that offer better performance. I study and enjoy your every post. Do I hear the topic for the next field test series? My tests weren’t a free recoil scenario (stock is against a rigid steel frame), but firing a rifle from your shoulder isn’t free recoil either. Thanks you sir for this endeavor. Added to Cart! Phenomenal write up, as usual, Cal. Incredible work, I can´t thank you enough for the significant effort you have gone thought to supply us with facts instead of opinions. I already did most of the leg work. I’ll publish that data at some point, but I’m trying to focus on muzzle brakes for this series. While the Creedmoor rifle is … Although the numeric values of the measured force over time and calculated free recoil impulse are different, the percent difference is virtually identical. That is some high-resolution force measurements, considering the average length of recoil was just 0.012 seconds! This isn’t a suppressor field test, but I just wanted to include one on this first set of results for comparison. It seems pretty precise and objective. AR .308 Cal Slip Over Barrel Shroud With Multi Port Muzzle Brake 1326-MB-P-308 $ 59.95. .223’s have no real kick in the first place so I suspect it was more designed to cause a neutral balance regarding stacking forces (relatively large ports on top but modest/minimal baffling/redirection on the side.). Wow, Adith. Running a business is hard, I can say that. I’ve just learned a lot about muzzle brake design through this process, and that is my educated guess. In order for it to make a 10% difference, the area would have to start out at 53.0mm^2, or an 8.21mm (diameter) hole. Thanks, Jeff! How do we get a couple of your hats to give-a-way at our Sept 12 Match? Great testing and data! These brakes should do worse because they let more gases out forward instead of out of vents. My first thought was what the Thunderbeast brake along with the new Ultra 7 or Ultra 9 might look like on recoil reduction. Thanks Cal for all your time and effort. I’ve a 30BAS, 30CB9 and a Ultra-9 in NFA holding. The 7mm Rem Mag is a winner if you want something supersonic out to 1600 yards (I’ve even hit targets at 1 mile with mine) with relatively mild recoil when used with a muzzle brake or suppressor. Brakes work by redirecting gas, so it makes sense that the more gas a cartridge produces … the more benefit the brake can potentially provide. Since clearly the brakes are much bigger than that, it makes sense that it was hardly 1-3%. It goes a long way. Here are the muzzle brakes I wasn’t able to test on the 6.5mm rifle: This is just one of a whole series of posts related to this muzzle brake field test. I can probably include a suppressor for those as well. Jam Nut, Nitride .308/7.62/6.5 - 5/8X24. Here is an example of the results I recorded for one of the muzzle brakes: As I publish these results, I plan to show how much each muzzle brake reduces recoil compared to a bare muzzle. Brand New. I’ve been running brakes on my rifles for years in order to cut down on recoil and maintain sight picture. I look forward to each post as I learn more each time. I wonder where the largest commercial application of muzzle brakes would have fitted into the results, the Browning BOSS. Ultimately, it was just a time thing. Just keep in mind it isn’t an apples-to-apples comparison. JP Benny Cooley (For more info on this, see the previous post.). Let’s start at the top. Very informative! area 419 (in stock) 5.0 (9) quiet muzzle brake 7mm. He takes your money then never delivers the merchandise. A lot of people are concerned with that on suppressors. Unfortunately, there is no industry standard for measuring recoil, which means manufacturers often publish whatever makes them look better. And remember what Professor Hall told us in the last post when he was talking about recoil calculations like what JBM provides: “While this method of quantifying recoil is useful, it ignores several factors that can affect the actual recoil force (felt recoil) transmitted to the shooter.” Meaning there will be a disconnect between the measured and calculated forces. You published the recoil signatures of the 6mm and it looks like you can get a reduction of recoil force from between 600 and 700 lbs with no brake to between 300 and 400 lbs with the “average” brake. On the other hand, there isn’t a practical limit to the amount of gas a muzzle brake can redirect, and it can redirect that gas in a direction that allows it to do more work in our favor. I started out firing 5 shots per muzzle brake, but as I refined the system and setup, my data became so consistent and repeatable that 5 shots seemed like I was just wasting a lot of good match-grade ammo without adding any value. R&D MRAD, There is a less-scientific concurrent test going in 5.56 is you weren’t already aware: The depth of your research-lust knows no bounds and we’re all fortunate to have you as a source. Another reader asked a very similar question, and I answere... Heath: You’re pretty much regurgitating Bryan Litz’s books with this particular present... Joe Bellicini: Once again, well done. A Data-Driven Approach To Precision Rifles, Optics & Gear, I ran tests to see how much it mattered if a muzzle brake was caliber-specific, and those results were also surprising. The guy who taught me how to hunt and reload, and really passed on the passion for rifles to me, is now getting older and isn’t able to shoot rifles with a ton of recoil any longer. Hey, thanks, Emil. I’ve never seen anything like it being done either, and that is always fun to do something original. My 6XC rifle weighed in at portly 16.2 pounds with a bare muzzle, and no bipod or magazine. The 6.5 Creedmoor rifle weighed in at 14.1 pounds with a bare muzzle, and no bipod or magazine. Both of those brakes have a unique design that send gas back at a 30-35 degree angle, and I think that is where they picked up the extra recoil reduction. I help run a company with 100+ employees, so that takes a ton of time and I do this in my spare time. Those external flats are completely nonexistent on the .223 version, so its middleoftheroad placement wasn’t surprising to me. The problem with this cartridge comparison is all things aren’t equal. produced in black Nitride for your pleasure. Without further ado, here is the data for the recoil reduction on the 6mm rifle for each muzzle brake: Any surprises? I can include that info. Here are the muzzle brakes I wasn’t able to test on the 6.5mm rifle: Badger FTE Muzzle Brake – As I explained under the 6mm results, the Badger barrel clamp design requires a very specific barrel diameter at the muzzle, and it didn’t fit on this rifle either. I did test the new line of ThunderBeast suppressors with this recoil setup and with a high-end sound meter. Lancer Systems – Viper Brake 6.5 Caliber. You have to modify the barrel (arguably the most critical part of a precision rifle) to attach a far-less important accessory. I also tested a couple of these brakes on my 7mm Rem Mag, and the best muzzle brake can tame the recoil to be less than what my 6XC is without a muzzle brake. I wanted to ask before you post the .30 caliber results if you’ll be including the Lantac – since some .30 caliber units were included in these 6-6.5 results but many others were not. ar-15 lr 308 muzzle brakes and compensators, ar-15 compensator, ar15 muzzle device, ar10 muzzle brake, ar 9mm muzzle brake, ar -15 flash hider, 308 flash hider, lr 308 ar10 flash hider, 223 muzzle brake 5.56 nato muzzle brake, 223 wylde muzzle brake,300 aac blackout muzzle brake, 308 muzzle brake, 6.5 grensel muzzle brake, stainless ar-15 lr-308 muzzle brakes, ar-15 lr-308 muzzle … Glad you found this stuff helpful. Also, the boss has been out for a while, and we’ve made a lot of advancements in muzzle brakes since it’s release. Thanks, again! The wrench flats make this muzzle brake very easy to install and remove. Someone else asked a similar question, and I published a chart in response to that which shows how the 6XC and 6.5 Creedmoor compare with no muzzle brakes. The rifle weight, stock design, barrel contour, and other things are different, and those things can affect the recoil signature. Most excellent Sir! But, that’s why I actually run the tests and don’t just talk about this stuff! 6 models Precision Armament M11 Severe-Duty Muzzle Brake (16) As Low As (Save Up to $6.00) $104.49 Best Rated Sig Sauer QD Taper-Lok Muzzle Brake Mount For SRD762-QD 5 / 8 - 24 TPI SRD-762-58 X 24 -B (3) $95.00 (Save $6… My guess is it would be on the lower part of the results, but I don’t know that for sure. No muzzle brake made today, at any price, will reduce recoil any better than ours. JE Machine Tech AR-10/LR-308 Muzzle Brake (1) $34.01 (Save 38%) $20.99 2 models Precision Armament EFAB Hybrid Muzzle Brake (7) As Low As (Save Up to $8.50) $151.95 Best Rated. Hopefully this will give us insight into what types of designs are most effective, and even those other manufacturers can benefit from that. 308 … And if you didn’t think a 308 had much recoil, you should fire 200+ rounds from a 6 … Price $129.99. Thanks for the input, Anthony. That rotation could be mitigated by a specific (probably a per-cartridge design) neutralizing downward push .. or by removing enormous rearward push .. or by leaning into the recoil enough to limit any initializing motion, but that becomes more difficult for larger calibers, for continuous fire, and frankly for most lay users. Toll-Free: +1-800-504-5897 When using ATC with a 10 shot group what would be an acce... Shootin’ Okie: Thanks, for replying. I’d LOVE to see how Zac was able to cut the noise and weight that much, plus make it stronger. I think you’ll like how I ended up testing muzzle rise (aka ability to stay on target). John, I can’t say for sure how it would perform … but it is basically the same design as the Shrewd brake, but isn’t as long. Thanks, Mark. I did want to point out that some of these brakes were caliber-specific to 6mm and others weren’t. precision armament (in stock) - 4.6 (34) ar .308 gamma 762 muzzle brake 7.62. vg6 precision (in stock) 5.0 (5) ar-15 gamma 300blk muzzle brake 300 blackout. It was actually my phone calls with Jason from JEC over a year ago that got me thinking about doing this test. That seems ludicrous … but it’s true! Thanks! I know I’d rock one! Intl. That surprised me. Consider this list to be your starting point in the quest for finding your perfect muzzle brake … That weight doesn’t include a scope or mount, as shown in the photo. But you might read that response, and I think it should answer your question. Glad you appreciate my approach. I’ve got a 308 bolt action rifle with a muzzle brake and one that doesn’t have any threading at the end… when shooting 200+ yards (I don’t really hunt, just use them for target practice) with the same scope, the one with the brake is much more accurate. Sign up and get exclusive access to promotions, sales events, pre-order sales & more! As I’ve said in the posts, I was surprised by a lot of the results. But that doesn’t mean it is out. Keep up the great work! … yeah! I have both recoil data and sound data. For a given hole, the mass flow rate will increase as the change in pressure increase, until the gas reaches super sonic speeds across the hole. As we learned in the last post, it seems like it may be short-sighted if you ignore either of them. There is an average of 614 data points included for each line! The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; 6 models MDT Elite Muzzle Brake (2) $119.99 $119.95 6 models Precision Armament M41 Severe-Duty Muzzle Brake (6… Here is a different view of that same data. Since Hornady’s release of this cartridge in 2008, it has gained quite a following in the precision rifle world. About the data, I feel like I’m publishing the data right now. That is a long way of saying … sorry, buddy. It helps you visualize how each design changes the shape of the recoil force. Keep up the great work and I am sorry you have to deal with the manufacturers phone calls (I bet their returning the calls now) disputing your science after you publish each blog. Below are five of the best AR-10 muzzle brakes that we chose for review. Hey, Mark. For some its our eyes and for others it’s our joints. On the 6.5, I tested all muzzle brakes except the ones that I only had in 6mm … and the Badger (again, it wouldn’t fit). Another thing to keep in mind is that most recoil calculations are made for free recoil (rifle is allowed to travel backwards without obstruction). I definitely tested the two elements you’re referring to: recoil and muzzle rise. . It is a nice product. Once it reaches super sonic speeds the mass flow rate is capped out, because the fluid acts incompressible. I couldn’t have produced the math to explain the results I recorded, but it sounds like you have. ; JEC Customs Recoil Reduction Muzzle Brake – I only had a JEC brake … SHOT Show 2020: Leica PRS 5-30×56 with PRB Reticle! I may try it at some point. To be clear, I tried the 6mm, 6.5mm, and 30 caliber brakes all on the 6XC, and in all 4 muzzle brake designs, there was only a difference of 1-3% in recoil reduction in terms of both overall momentum and peak force. “Just the facts ma’am.” Really important question. The caps were $30 and the T-shirts were almost $50. Precision Armament – AR .308 M4-72 Severe Duty Brake 30 Caliber. The big question comes down to what measurement most closely correlates to perceived recoil from the shooter’s perspective. But I do measurements for the new line of suppressors that ThunderBeast released this year. And some of those are just really similar to others that I did include in the test. Neither the JBM calculations nor my tests should be taken as gospel for what the perceived recoil would be. Take a look at it’s ballistics compared to something like the 300 Norma and 338 Lapua … and look at the recoil you have to endure to achieve the same down-range performance. That’s what this is all about. I’m not sure. That’s a great question, Carl. I’ve been personally using one for over a year on my primary rifle. For a precision rifle, this seems like the tail may be wagging the dog. I’ve been trying to find a way to offer apparel that people could purchase, but I don’t have the energy to inventory and ship all that. Free shipping. I certainly can’t take credit for all of it. Subtracting our bullet from the bore we get our “holes” are 4.91, and 10.21 mm^2 respectively. Notice how the suppressor stretches out the amount of time the recoil event is spread over, but the muzzle brakes keep it about the same amount of time and do a better job of reducing the size of the “area under the curve.”.