When I bought my first .30/'06, a M721 Remington, at age 13, I had flinching problems big time. However, I shortly thereafter discovered that I was reacting to the muzzle blast more than the actual felt recoil. Once I started using the proper type of ear protection, the flinching went away! Before you install a brake, make sure it is the RECOIL that's the problem!!

Keep yore powder dry!!