Muzzle break inside diameter? Jan 10, 2018 19:31:31 GMT -8 via Tapatalk Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by wildrose on Jan 10, 2018 19:31:31 GMT -8 I recently purchased a BHW barrel in 6x6.8. Threaded muzzle is 1/2-28. Would a .223 muzzle break with a inside diameter of. 290 be a good choice or should I go bigger?