I’ve shot about 10 deer with 223 and Sierra 1365’s. One ran maybe 85 yards. The rest were either bang flops or at most 25-30 yards death sprints (heart/lung shots). Those deer were all shot in open fields at maybe 75-225yards… if I was hunting in the woods id want a bigger caliber that left a good blood trail in case my shot wasn’t the best. As others have mentioned…it is a lot more about where you hit them than with what.