Well, hard dry deer jaw bones are a lot different than small critter ribs and shoulders. Even the Vmax has no trouble penetrating mild steel and 2x4s etc. I bet both bullets easily penetrate the bone with no expansion and then do who knows what in flesh. I'd rather see what the bullets do in flesh without the bone. I bet it will look like the wet phone book test. In real animals it's a little different though, in real animals there's softer tissue, lungs, guts, hollow cavities, and elasticity. All I know is the Vmax about vaporizes that kind of small game tissue.