^^^APA Brakes are money! I prefer the Lil ******* Gen II for anything under 30cal. THey are a little more costly, but intall is a 5 min job and only requires a 1" Wrench or crescent wrench to snug it up just slightly. I've taken it off to clean many times and reinstalled it without zero shift numerous times as well and it's now sitting on it's 3rd barrel. So, I would say the cost is a one time investment as long as you clean it up now and then (Every few hundred rounds or so)

Performance info, My 243win shooting 115DTACs over 3000FPS almost doesn't move using this brake in combination with my 17lbs comp rifle. I can cycle and fire accurate shots every 2secs or so at full speed without losing the target in the scope at all. So I would say it knocks recoil down tremendously. In a solid prone position I may come off target .3-.5 Mils during recoil. It's very efficient.

Shots in this video were on a 6-8" plate at 400yds.