While I have your ear so to speak how do you like the 150 gr Ballistic Tip?
Gerry, I've used the 270/150 NBT combo on elk. Only a cow, but she was a fairly big one. 120 yards, through both lungs and exited. I'd not hesitate to use it on anything here in Montana.
I remember people on this site using it on bigger animals and being happy. It sure does seem to kill deer well without excessive meat damage so far.