Do More Muzzle Ports Equal Less Recoil? By MDT

[K9TXS]

Just saw this interesting video on number of ports on muzzle brakes by MDT

Edited 1-4-2022: I contacted MDT and asked them about the caliber and why they didn't do a test showing the recoil without a muzzle brake. Their reply was, it was not pertinent to the video. They only wanted to show the difference between the brakes they had.

 

[rijndael]

It was an interesting video, it would have been helpful if they included the tested caliber.

 

[Fuj]

I would have liked to have seen the first shot with no brake.

 

[Ranger007]

It was an interesting video, it would have been helpful if they included the tested caliber.

Agreed!

 

[cheek9075]

I would have liked to have seen the first shot with no brake.

Agree. Also would like to know force from no brake to brake.

 

[Ranger007]

Agree. Also would like to know force from no brake to brake.

Also agreed

 

[buckeye68]

Average deflection without the brake was 62.9.

 

[Triple BB]

Would've liked a comparison of a small and large caliber rifle including different brands of side ported brakes. I have Ti3 Pro titanium brake on two rifles. The amount of weight between a 4 and 5 port is miniscule.

 

[Fuj]

Doing a complete test across the spectrum would be a lengthy,
and not to mention ammo costs. At least this test shows a good
generalization and ball parking. I would like to see this test done
on a straight pull device with a chrono, and measuring in actual
pounds of recoil.

 

[DirtySteve]

Here is a link to some good testing of different brakes.. If you scroll down to the bottom they provide links to testing different cartridges... Naturally bigger cases provide more gas and more reduction. but only about 2% more reduction. However that can make a huge difference as it is 2% of a greater force..

Muzzle Brakes: Field Test Overview & Line-Up

This is the first post in a series that will cover the results from an epic muzzle brake field test....

precisionrifleblog.com

 

[Tokay444]

Port geometry is arguably more important than sheer number of ports. Look at JP's brake.
The US military did EXTENSIVE testing on this subject, and they run what, a 2, maybe 3 port on their 50BMGs?
This is hardly a definitive test, and is simply clickbait for youtube likes.

 

[darkangel_r2]

Just saw this interesting video on number of ports on muzzle brakes by MDT

They are calculating their percent reduction wrong.

1/2mv^2 (linear recoil energy)=mgh (pendulum potential energy)

comparing max potential energy mgh1/mgh2

ratio of actual recoil energy is H1/H2 since all other terms cancel

H=L-L*cos(angle listed) where L is the length of the lever arm to the center of mass. This term can also cancel when factored out in a ratio.

So it ends up being;

[1-cos (angle 1)]/[1-cos(angle 2)]

One port is aprox 54% reduction in recoil energy, 2=61%, 3=64%, 4=67% and 6 port is 68%. Going past two is pretty small increase so their graph is a little deceptive.

 

[4xforfun]

I don't care......Keeping the 5 port on 338 EDGE. LOL

 

[Spook]

what if the bore of the brake tapers toward the muzzle?

 

[284winner]

No difference in my 4 port and 5 port on my 338 LM improved. Gonna try a 3 port on my 300 PRC and use it on my 338 LM improved to see how it does. Guessing the 4 port will be the best over all option in recoil reduction.

 

[ZenArchery]

If you have an hour to spare Mark & Sam after work builds their own brakes. There are 3 videos about 20 minutes each that discuss efficiency, ergonomics, port size, port direction.

 

[D-4297]

Having several very front-end , ( muzzle ) light Mosin - Nagants ,I was building a better mouse-trap and talked to several knowledgeable Mosin shooters about a Brake . Every one of them made the same recommend . Muzzle Brakes & More was the name . Called them up and had a nice conversation about their Brakes , and ordered their Four Port . Would have preferred the Five Port , but was limited by the pencil-neck barrel size of the M-N . The Four port was all it's cracked up to be , and a excellent MB . Did a very nice job of calming down that jumper . Money well spent . MB&M specializes in Brakes for large caliber rifles . Check them out .