I don' t think anyone' s arguing it doesn' t happen, just that there' s no " hollow" spot, and if you hit right behind the shoudler and don' t recover the deer, one of two things happened.
1) You hit over the spine. This is just about every time someone says they didn' t get a pass through, and the blood trail stopped after a little ways.
2) You hit under the spine, but never learned how to properly trail and recover a deer.

This topic is almost as bad as the numerous threads I read every day on these boards about making a " perfect" shot, but not recovering the deer.
Once again, you either didn' t make a " perfect" shot, or you can' t track a deer.
People need to stop making excuses for bad shots, they happen to everyone eventually, learn from it, don' t blame some mythical " hollow" spot, or your equipment, for that matter.