I mostly disagree with the shouldar shot percentage posted above. I just happened to have this experiece on a big 9 pointer a couple weeks ago. Slightly quartered toward me. My shot was more forward than I wanted. The arrow blew through the shoulder blade, both lungs and did come out the other side. Not a total complete passthrough, but it got both lungs. He went 60 yards and expired. He didn't bleed all that well the first 20 yards, but it gradually got heavier and heavier till it was a steadystream.Unless its completely broadside and forward on the shouldar, its not that terrible of a shot.

The biggest things is, dont give the animal the half hour deal and go after him. Most likely, hit that hard, they will lay down not too far away. Give em a few hours then look for them. Treat it like a gut shot. You won't find all the blood in the world with this shot, but if you're smart about it, you can greatly improve your odds of finding the animal.