I settled on 80 on grains of 209 with a 50 cal, 348 gr Powerbelt for elk. I'm sure 60 with that light a bullet will drop a deer with no problems if put in the right place. I'd sure shoot it a hundred yards to see how much drop it has though.
If God wanted you to walk and carry things on your back, He would not have invented stirrups and pack saddles
