The deer I had trouble with were double lung shots. Just a small hole from the fast boolit.
I see your point about poor blood trails with guts plugging the hole. That is a given.
Gut shot deer with an arrow are also very bad, not much blood outside.
You can do a lot of damage to a lung but if the boolit angles into the guts and they plug the hole, all blood will stay inside.
I find many gut shot deer each year a long way from where they were shot. No way to track them.
None of my shots ever hit guts, pure lungs only.
I wish we had a camera at each deer that was found. A stick poke through the deer.