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Recoil reduction on 300 RUM

 
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  #22  
Old 06-08-2014, 10:58 PM
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Join Date: Jul 2004
Location: Texas
Posts: 5,594
Re: Recoil reduction on 300 RUM

Quote:
Originally Posted by Edd View Post
Have you done any testing on how effective the 1" round brake is in comparison to the full sized one?
Yes it appears to be almost as effective but with shorter ports It loses 2 or 3 % (not bad but not as good as the larger brakes)

Also the perceived sound is louder than the full size brake. the best recoil reduction with a 1" brake
on a 300 rum was 68% the full size went to 70% with the same rifle and load.

The same rifle and load with the best round factory muzzle brake we could find/test was 51%.

The least reduction of the un tuned 1" round was 58% on a 308.

So there is a loss in efficiency with the 1"round but not enough to make it a poor performer.

I am working on a 1'' round with the same design that can be turned to .750 safely for the people that like the looks of the round brakes. and if it performs it will be added to my list of different brakes sizes. after lots of testing I understand more about how muzzle brakes work, and how they function. and I think I can improve on the performance of round brakes. I have to try.

I realize that not everyone likes the large flat brakes, but I was after maximum sound and recoil reduction and felt this was the only way to top some already outstanding muzzle brakes.

J E CUSTOM
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  #23  
Old 06-09-2014, 10:30 AM
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Join Date: Mar 2011
Location: North Dakota
Posts: 494
Re: Recoil reduction on 300 RUM

Here is one of Jerry's round Assassins on my fathers 7 saum. My father is 65 years old and recoil sensitive. I knew we could make him a better shooter if we just stopped the flinch he has developed. This rifle is now his favorite and will be ordering another round assassin for his 25 wssm target rifle. These brakes work. I have one on all my RUMs with 60-70% reduction. They are worth every penny!!
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  #24  
Old 06-09-2014, 10:31 AM
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Re: Recoil reduction on 300 RUM

Another pic....
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  #25  
Old 06-09-2014, 12:17 PM
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Location: Texas
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Re: Recoil reduction on 300 RUM

Thanks for the post and the pictures Jayson.

I am glad your dad Likes the break and gets to shoot more.

J E CUSTOM
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  #26  
Old 06-15-2014, 04:04 PM
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Re: Recoil reduction on 300 RUM

have you did any testting with the 338 lapua ?

Last edited by new shooter; 06-15-2014 at 06:35 PM.
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  #27  
Old 07-14-2014, 08:43 AM
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Re: Recoil reduction on 300 RUM

Quote:
Originally Posted by new shooter View Post
have you did any testting with the 338 lapua ?
Sorry I missed your post/question.

Yes, I have done test with the 338 Lapua and had great results.

The 300 grain loads went from 41.6 ft/lbs of recoil to 17.8 ft/lbs of recoil. (57.1% reduction)

The 250 grain loads went from 38.8 ft/lbs of recoil to 14.4 ft/lbs of recoil.(62.9 % reduction)

The Lapua has a small powder charge with heavy bullets compared to most of the big 338s,
so the % reduction will be slightly less with all types of brakes.

The tuned Assassin appears to add 6 to 8% over the un tuned and 12 to 20% over other brakes
we have tested.

J E CUSTOM
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  #28  
Old 10-06-2014, 10:25 PM
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Join Date: Oct 2005
Location: Fort Morgan, Colorado
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Re: Recoil reduction on 300 RUM

I really love this brake! This is my wife shooting my new 300rum with 100gr rl33 and 230gr berger bullets. All she has shot until this video was her ar15. I think the recoil is very manageable!

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