I guess I'm in the "no brake" column. I can definitely see the point if you hunt alone and shoot something like a 300 or 375 RUM and long shots are the rule (maybe hunting elk cross canyon). I can also see using one for load development and then putting on the threaded cover for practice and hunting I can tell you a 338 RUM with a muzzle brake is about twice as loud if not more than my 500 Jeffery for the shooter and probably three to four times as loud to someone on the side. My feeling is if you need a brake, step down in caliber, most often you will shoot better doing so anyway. Not much in North America a 270 can't kill at any reasonable range except maybe the big bears.