Unless you are shooting something so poorly matched to the game or you just like being unethical, you are already shooting a weapon that has power to spare!! AND, getting a good blood trail is a he** of a lot more important than leaveing every last foot pound of energy in the animial.

It may take you looseing an animial or two before you figure this out, but if you hunt long enough you "will" figure it out.

Drilling Man