Recently purchased a Bergara B-14 HMR in .300 WM. After researching muzzle breaks, I ordered a Sidewinder self timing break from Area 419. The break is massive and dwarfs the barrel. My goal with the break was to reduce recoil and be able to spot impact. Achieved both!! The .300 recoils less than my .308. I am very impressed with the Sidewinder! Check them out for details on it.