[quote=Palehorse;3848649]Raise the whole gun. I have 12-18 inches, depending on the drop, under the forearm. That will allow you to sit up in an upright geometry, as if you were standing, keeping the butt plate off the boney part of your shoulder and also your face does not creep forward. You may need sand bags of 6-8" under the butt also.
Thats pretty close I set up the bench so I can sit up strait. I you watch the best bench shooters you won't see them all hunched over like the beginners.