Gunsmithing Muzzle brake sizing

[308Dude]

How do you decide which size muzzle brake to buy?

There's always a choice for diameter and thread count, for example 5/8"x24.

I have a 308 with final bbl dia 0.820"

 

[USMCj]

Re: Muzzle brake sizing

5/8x24 is what you need.

 

[308Dude]

Re: Muzzle brake sizing

Thanks. Also, what about the exit hole size? How much larger than the caliber should it be. Different manufacturers recommend different dimensions and some don't have a recommendation at all. Is 0.350" too big?

 

[427Cobra]

Re: Muzzle brake sizing

Get a Tubb Brake, I gaurantee you'll be amazed, http://www.brownells.com/.aspx/pid=22633/Product/T2K_TUNEABLE_MUZZLE_BRAKE set up your account and it will get cheaper, 85.50 the exit hole will have to be enlarged by the smith, its tuneable to you, your gun, and shooting style.

 

[427Cobra]

Re: Muzzle brake sizing

yes 350 is too big

 

[jasonk]

Re: Muzzle brake sizing

Are all Tubb brakes the 3/4 thread? Wish he made them 5/8 too.

 

[427Cobra]

Re: Muzzle brake sizing

3/4-28 is all he sells, my 308 kicks alot more with my can than this brake, it really shines on positional shots.

 

[wnroscoe]

Re: Muzzle brake sizing

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 308Dude</div><div class="ubbcode-body">How do you decide which size muzzle brake to buy?

There's always a choice for diameter and thread count, for example 5/8"x24.

I have a 308 with final bbl dia 0.820"
</div></div>

Purchase a break that can be turned down to match your muzzle. The Badger Thruster and Holland Brakes are side venting and the best choice for prone shooting. Vias also makes good brakes but you'd get a dust signature in the prone. Dont have your barrel threaded until you have the brake in hand. Some are 5/8 x 24, 5/8 x 32 and some are 11/16 x 24. The exit hole diameter needs to be .020" over the bullet diameter.

 

[308Dude]

Re: Muzzle brake sizing

Thanks guys. My questions are answered.

 

[ar15is223]

Re: Muzzle brake sizing

wouuld this break be ok for a .338 caliber rifle?
Thanks,
Nick

 

[308Dude]

Re: Muzzle brake sizing

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">yes 350 is too big</div></div>

Tech support at JP Enterprises says 308 needs 0.040" clearance. Their tactical comp (large version) has a .350 hole. I'm just reporting what I was told.

Link to JPE Tactical Comp