#DPMS 308 MUZZLE BRAKE FULL#

Just as we saw in the recoil results for the 6mm and 6.5mm, both American Precision Arms and Alamo Four Star have a measurable lead over the rest of the pack. Without further ado, here is the data for the recoil reduction on the 308 rifle for each of the muzzle brakes: And if you didn’t think a 308 had much recoil, you should fire 200+ rounds from a 6 pound rifle in one day and see if your shoulder doesn’t get a little tender! Oh, the sacrifices I make in the name of science! 😉 That weight doesn’t include a scope or mount, as shown in the photo. Our 308 rifle weighed in at a scant 6.2 pounds with a bare muzzle, and no bipod or magazine. This rifle may also help us understand how the rifle weight plays into the recoil equation, and how that affects muzzle brake performance as a percentage of recoil reduction.įor 308 ammo, I selected the very popular Federal Premium Gold Medal 168gr SMK Match-Grade Factory Ammo. So by using this rifle in the tests, it can help give some context for the amount of recoil we’re talking about. While not all of my readers have had the pleasure to shoot a really high-end precision rifle (like the other 3 test rifles), almost everyone has fired a rifle similar to this. I consider it my baseline for comparison. This particular one is a Savage Axis SR 308 Win. It is a standard, budget-friendly 308 rifle. The rifle I used is not a precision rifle, but it represents something most people are familiar with. 308 Muzzle Brake Resultsįor our mid-sized 30 caliber cartridge, I had to go with the legendary 308 Win. To learn more about those measurements and hear the cases for both sides, please read the recoil post. Average % Reduction – This is just the average of the other two measures (weighted 50/50).% Reduction in Peak Force – This is the highest instantaneous peak force recorded through the entire recoil event.It isn’t just the peak force, but the entire “area under the curve” when you graph force over time. It represents the total “size” of the force that I described in the recoil post. % Reduction in Overall Momentum – This is the reduction in overall impulse or total momentum of the rifle at the end of the recoil.For each set of results, I will show 3 pieces of information: Here is an example of the data I recorded for one of the muzzle brakes:Īs I publish the results, I plan to show how much each muzzle brake reduces recoil compared to a bare muzzle.

So I backed that down to only be 3 shots per muzzle brake. 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.

The results are based on the average of multiple shots fired with each muzzle brake. Honestly, I’m not here to try to convince anyone one way or the other, but simply present the data. As we learned in the recoil post, it seems to be some combination of the two factors. Some experts lean more towards that being related to the total impulse or momentum, and others think it is more linked to the peak force. The big question comes down to what measurement most closely correlates to perceived recoil from the shooter’s perspective. Unfortunately, there is no industry standard for measuring recoil, which means manufacturers often publish whatever makes them look better.

#DPMS 308 MUZZLE BRAKE FULL#

Here is the full line-up of muzzle brakes, and you can read more about each in this post.Īs we discussed in the recoil post, when someone claims a product “reduces recoil by 50%” … it usually isn’t clear what they’re talking about. For more info on the test equipment and how the data was gathered, please see the recoil post. The recoil data was collected using high-speed, high-resolution force sensors. This post summarizes the results for the recoil tests ran on 20+ muzzle brakes using two 30 caliber test rifles: the 308 Win and the monster 300 Norma Magnum.

Dpms 308 muzzle brake