I was watching the GUNWERKS hunting program the other day, the program is called Long Range Pursuit. They have a segment on rifle tips. The young lady giving the advice was a smallbore position shooter. She suggested moving the scope away from the eye to increase the black ring that forms in the scope. This will let you see the amount of misalignment you actually have with the scope. I know that I have some misalignment with different stocks and was curious as to what effect that has at the target.