I would use the .270 or .280 Ack., only because you left the wonderful 30-06 firing a 175 grain Barnes LRX bullet at 2,800 fps mv off of the list. That load combo will put a moose-elk down at 500 yards and shoot through most any grizzly. It has all of the "right stuff".

Last edited by 1Akshooter; 12/29/19.