Gunsmithing oversized muzzle break?

dawson08

Sergeant
Full Member
Minuteman
Mar 27, 2012
249
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West Virginia
I have a remington 700 chambered in 7RUM and i was givin a muzzle break that fits. However the muzzle break is for .338RUM since the diameter is bigger will this work and would it effect accuracy?
 
Re: oversized muzzle break?

It will work fine.
It may lose a little efficiency as there is more clearance for the bullet than needed, but we are talking about very small losses.
Perhaps 5% or maybe 10%.
You would not be able to feel the difference between that brake installed on your rifle and one with a slightly smaller exit hole.
 
Re: oversized muzzle break?

The benefits of a tight fit between the bullet and muzzle brake exit hole are greatly exaggerated. I like to bore them about .030 over bullet diameter. But a hole as much as .080 over doesn't seem to reduce the effectiveness.