by Bmt85 » Sun May 17, 2020 3:32 pm
A brake is effective on the 450. I have an 18" Tromix upper with a 4 port Ross brake and a 20" BHW without threads. I use the same lower for both and that has a CTR stock with Limbsaver pad. The Tromix is towards the lighter end, compared to my other upper's. The 20" BHW is my heaviest. The Tromix build still jumps around, but I can shoot it all day, the BHW takes a toll after a few mags.
IMO, if your setting up a hunting rig, then the recoil difference between having a brake or not, doesn't really matter. I don't pay attention to recoil when I'm hunting. Also, you might not want a comp/brake when hunting. One hunt I took the Tromix on, I was basically in a small shed, had multiple windows, all open, as was the door. I didn't bring hearing protection along, but thought I'd be ok. Stuck the muzzle out about as far as I could and fired. I was basically dazed for a second or 2, and me hearing was seriously messed up for a few days, and still didn't get back normal for another week or so. It definitely did permanent damage. Won't do that again.
With the Bushmaster barrel, you might not want to go that route. The Bushmaster barrels are chrome lined. I've heard some people cut down chrome lined barrels, and they don't have an issue, others have had the lining start to flake off. If you do go that route, I wouldn't use any cleaners that eat copper. Chrome lined barrels have a thin layer of copper to bond the chrome to the barrel. Some recommend against running any copper solvent in a chrome lined barrel, regardless.