Here's a decent Iowa whitetail....and stories like his are why Dad invented the Snuffer in the first place...
Morning of Nov 4 2004 - this guy had a hot doe he was chasing around a small inside corner in an open field, growling, snort-wheezing and tearing up scrapes. He came past me 3-4 times following her, always on the move, and was within 50 yards for 45 min. Finally the doe ended up directly under my stand and he came broadside at 8 yards. As I released the doe took off (from him, not me, I think) and he turned towards me to chase her. The arrow entered him at the last rib angling back and exited between his hind legs. Hit nothing but punkin'. He hunkered up and headed down the ridge into the timber. We gave him a couple of hours and found him bedded about 80 yards from where he was shot, the arrow hole you see in the middle is the quartering away finishing shot. I don't have much confidence I would have saw this buck again with a small broadhead. I had to clean him up a bunch before the pics. Trust me, a Snuffer hit like that is ugly...but effective, they are good insurance when things go wrong. 58 lb Black Widow and 600 grain arrows.
And towards what I think you are getting to with the question....black bears. None of my pics are digital, but I shot my first bear with a 52 lb BW recurve, 525 grain arrows, and two more with a 55lb BW recurve and 580 gr arrows (both P&Y size boars)...all complete passthroughs and 2 of the bears went 30-40 yards, the other (liver shot) approx 125. No blood trail problems!
Ryan