In a SxS the right barrel will flip up and to the right; the left will flip up and to the left. When barrels are regulated they are adjusted to negate this flip. However, they can only be regulated for one mass of projectile and one velocity. This is a little difficult to see in a shotgun but is very obvious in a DR.
An O/U will flip upward.
However hard I've tried to detect flip in my shotguns using normal loads, I never could be convinced I culd see it.
However, in a DR it is very obvious.
Last edited by Gnomon; 03/12/13 08:08 PM. Reason: spelling errors
