Which muzzle threading?

[Dave G]

I am getting my barell threaded for my 300 win mag for a brake. I am reading some things that suggest a 3/4 thread instead of the more popular 5/8 to prevent the barell from trumpeting. Is this the way to go and does it limit my muzzle brake options? Thanks!

 

[natdscott]

Depends on the barrel, the speed (heat) generated when machining, how much is being removed...

What’s the muzzle diameter as it is?

Yes, it will limit your options. 5/8 is ubiquitous.

Doesn’t make it better.

Then again, there are way too many 1/4 Minute rifles with 5/8 threads to make it a truly horrible thing.

 

[Dave in WI]

The OD of the barrel at the muzzle will be one of the main factors in your decision. Leaving enough metal where threaded and having enough for a shoulder if not shouldering at muzzle.

 

[Dgd6mm]

What does your Gunsmith suggest?

 

[Terry]

3/4" is easier to do on large diameter muzzles. Plenty of good brakes available.

 

[Coyotefurharvester]

Minimum O.D. of barrels for threading
1/2x28. 0.600. I have a sporter 30 tc with this thread size for suppressor
9/16x24 0.622 I have a sporter 338 win mag with this brake threading
5/8x24 0.725. Most of my varmint barrels have this thread
3/4x20,24 or 28 0.850