My hand is 4.5" acrost. Add another 1"+ from the eyeglasses to the eye and if that ain't close to 6" what is it. I've shot the very rig he's talking about with no problems and the solution, as more than one person has tried to tell him, is to learn to hold and shoot the rifle. Maybe add a bit to the length of pull. Throwing money at the problem ain't gonna change that fact.
Maybe Ol' Charlie P has the best idea.