Need a muzzle brake 9/16x24 for 338 cal - recommendations?

[slm9s]

A good friend just bought a like new Wby Accumark in 338-378 but it didn't come with the factory muzzle brake. I called Wby, but they won't sell it by itself. Can someone recommend a good value brake?
Thanks.

 

[BurnOut]

That is WAY too much cartridge to push through a 9/16 threaded muzzle. If the muzzle is too small to accommodate a larger thread, look at a clamp on brake from Witt Machine or someone else.

 

[slm9s]

you're saying Wby doesn't know what they're doing threading them 9/16x24?

 

[BurnOut]

https://www.longriflesinc.com/colle...services-muzzle-threading?variant=11313326913

Specifically, the following:

Last, the caliber and cartridge for a particular setup must be considered. As a rule, LRI requires a minimum of .100" of wall thickness between the groove diameter of the barrel and the root diameter of the thread being machined to the muzzle. This value is judgement based as well. A 300-378 Weatherby Magnum is a powerful cartridge with muzzle pressures significantly higher than a 308 Winchester at a given barrel length. Wall thickness should be increased accordingly.

Our experience has shown that a thin wall muzzle has the potential to "bell mouth" over time. When a crown bell mouths, the accuracy of the rifle suffers. You as the user may be compelled to think the barrel "let go" due to throat erosion when it's actually because the muzzle was threaded with too thin of a wall thickness.

 

[Alabusa]

I would say call KDF and see what they recommend.


https://www.kdfguns.com/KDF MB Layout.html

If you don't like/want full circumference brake, look at Terminator Brakes...

http://www.shoot-long.com/product/terminator-muzzle-brakes-t1-t2-t3-t4-t5-t6-tt-t3b-ta-te/

 

[Danny1788]

Nathan at muzzle brakes and more will make you a brake for that. Contact him and tell him your situation he will get you squared away.

 

[Waorani]

Not fond of adapters but there is this which would expand your options https://www.brownells.com/rifle-par...read-adapter-9-16-24-to-5-8-24-prod86836.aspx

Odd WB won't sell brake but they will thread/fit one - http://www.weatherby.com/accubraketm.html

 

[cav has been]

A friend was in the same fix with a 30-378. Lost the brake in a move. Muzzle brakes and more squared us away.