1/2" Threads and Bare vs Muzzle Break

[robpiat]

So I had an interesting although not scientific observation. I’ve been developing a load and trying factory ammo in a LaRue stealth barrel with a bare muzzle. I was getting full choke patterns with most everything.

My intent was to do the load development clean and come back with a MB/suppressor and make sure it wasn't the stuff hanging off the end of the barrel.

I decided to try some factory ammo. With the same 77 SMK GMM ammo, the groups tightened up from 2” to sub MOA at 100 just by adding a brake.

I want to know if others have seen this and also wonder if we’d be better off getting 5/8 or the largest threads possible on heavy barrels to minimize whatever might be going on in the last 3/4” of barrel.

Any thoughts?

 

[boltfluter]

Your thinking is right on the money, I always get the biggest thread at the muzzle to minimize any barrel distortion from the machining process. Good luck with the quest for a load.

Paul