300PRC muzzle brake test

Описание: I've modified my Beast brake design slightly over the years since introduction and I haven't done a 300PRC test so I did a new test yesterday. I picked up some new brakes (Precision Armament , Assassin, Kirby Allen (Pain Killer), Ti Pro 3, and APW) along with the ones I've already tested such as the T-3 and T-4 Terminator, Fat Bastard, Muscle brake, and Area 419. I didn't want to clutter the test up with all of my brakes so I kept it simple with all the brakes close in relative port size.

A couple notes: The APW brake and the Ti Pro 3 both had relatively high run out, around .006" which can lead to bullet impacts if the bore isn't large enough and/or the barrel threads aren't perfectly straight. The Ti Pro 3 was made entirely in a mill which is nearly impossible to get run out numbers as low as a good lathe. There are ways to get the run out lower in a mill but the manufacturer hasn't figured that out. Most good brakes have run out .002" or less and the best are .001 or less. Self timed brakes just about always have higher run out due to stacking tolerances from multiple threaded parts. 1 piece brakes can have run out numbers in the .0002"-.0003" range. My Vermont no go 3b 5/8x24 thread gauge goes in the Pain Killer brake so the threads are super sloppy.