I don't shoot cup and core in my 7 mag. i likely won't get two holes but the same bullet works wonders when slowed down to 7mm-08 speed.
I shoot Sierra Gameking 160's in my 7 Mag and there is no question you will shoot right through a broadside whitetail, both shoulders, bone, whatever and blow a hole right out the other side as big as a post-it note.
Try it.
