Many rifles shooters and certainly myself have experienced arm/shoulder bruise (see pic) from recoil particularly when shooting repetitively over a short period of time such as during competitive matches. I shoot 6.5x47 rounds on a front rest with a bag under the back stock using mid level powder loads and still get these bruises even though my arm/shoulder is not touching the stock butt until it recoils in the rests upon discharge. Maybe I need to position the butt nearer toward where my upper arm meets my shoulder. I know there are various pads that can be affixed to the butt but don't know which are most effective. There also may be other ways to avoid the bruise. Any thoughts regarding what I can do to minimize or eliminate this problem.