I believe I have an 11/16-24 threaded end cap sitting around. May tinker with another style brake but debate the effectiveness of a brake for a 450 bushmaster. We're not talking a high velocity round using slow burning powder. I would bet the majority of the powder is burned by the time the bullet leaves the end of the barrel. Some brakes are more effective than others, just on the fence for the 450 bushy.
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