The logic of " I shot a deer and didn' t recover it" =" dead spot exists" or
" I shot a deer and someone else shot it later" =" dead spot exists" doesn' t work. They are just bad shots. Meat shots. As someone else said, you could drive an arrow through the hindquarter and the deer might live (or die slowly) and call that a " dead spot" or " hollow spot" . It' s not accurate. If you shoot a deer and you don' t recover it or it lives, then you have hit the dreaded " lousy place to shoot a deer" spot. That' s all it is.