.338 Lapua just in case you have to take a 1200 yard shot at the South end of a North bound buck to fill your tag. Don't want to be under gunned in that critical, now or never situation. It needs to be chambered in a 4 lb. rifle too cuz you need to figger in that 3 lb. 6-50X60mm tactical scope you'll need for those 1200 yard shots and you don't want to risk a strained muscle if you have to climb a mountain.