Keep using cup and core long enough ,and what you will see is an animal that will run with no blood trail or exit wound , that you may or may not find . A animal can run a long ways dead on its feet. I witnessed that Saturday morning when my granddaughter shot a nice 8 point with a cup and core , she said did I miss ,lucky I was watching the reaction of the deer heart shot , broke shoulder , looked like a grenade went off inside the animal . If she had been hunting by herself it would have been possibly a lost animal absolutely no sign of a hit backtracking from bullet impact. She will be shooting Hammers next year.