I can move a K-80 about .250 inches on cast and about 3/8 change in drop. Relieve the tang inletting (less than 1/16) shim the stock over and then rebed the action. The same trick also works on drop only you don't remove wood. Just shim and rebed. Depending on your color matching skill the tiny amount of bedding won't show, however the drop change can show as the wood gets proud of the metal. You will have to judge how much you want to show. K-80's tolerate quite a bit of change.
bill