308 150gr or lighter softpoint.
Follow navlav8r's advice and shoot into the ground.

Slow speed and solid bullets are what ricochets are made of.

I would also avoid them due to the desire to avoid a longer
track. Sure shot placement trumps all. Duh! But tissue disruption
kills. And you do not want your deer bleeding all over you non-hunting neighbors concrete pool surround.

Parents who say they have good kids..Usually don't!