I've killed five elk with a 30-06, and I'm no expert when it comes to round capabilities. I think, all five ofthose elk were killed with Remington Core Lokt, 180 grain. But these old boys here have forgot more about hunting than most hunters have learned yet, so I would listen to them. One thing I do know for sure though, try to find time to zero in at or close to the elevation that you will be hunting. I personally believe that is just as important as the round that you choose. Good Luck!