If you heard a loud "thunk" and had little penetration, you hit bone. Probably hit the shoulder blade. Even a fixed blade broadhead would fail, hitting a deer there. I know, I've done it.

When you hit a deer through the ribcage, it makes a hollow sounding plunk, similar to the sound of shooting a pumpkin or watermellon.

Any loud sound means you hit something solid like bone.


Its funny how people blame their equipment and not themselves.