Wolfen,
I'd have to say my experience is similar to yours. Half the time, I don't even know if I hit the deer, much less exactly where the arrow was when the deer dropped to run. Maybe some people have eyes like an eagle and can see precisely where the arrow is when the deer drops. I can't.
Bullelkklr,
Elk dropping 20+ inches on a couple yard shot? Your bow must be shooting about 25 fps. Time to upgrade your bow!