I always used the Remington Premier Varmit ammo loaded with a 50gr Vmax ballistic tip. It plain out layed them out. I never had one go farther than 30yd and only had 2 deer even run with it. I killed 8 deer with a 223 with that load and i was very pleased. It doesn't leave a exit hole so u get no blood but no tracking is required with that load. I shotall but 1 of the deer in the lungs also and penetration into the chest cavity was never a issue. The other it busted right through the skull and lights out. I always have a box of that ammo laying around incase i decide to pick that gun up again for deer.