Most for least? Definitely anything based on the Hornet case. Anything from cast lead plinker/small game loads to full snot varmint scratchers, they can be loaded for a ridiculously small percentage of anything else. If deer-size game were thrown into the mix, then a .223 would get the nod. Again with a crazy selection of bullets from cast bullet plinkers up to heavy weight game killers- what's not to like? Moving up to heavier game, then the arguments really get interesting.
