Been there and unfortunately done that. My advise is to make sure you don't grip the bow...instead cradle it. I had a bear at 20 yards 3 years ago and I gripped the bow (excited) and the arrow pulled to the right just enough to go from the perfect hit to a shoulder hit. Luckily the bleeder blade on the Steel Force head cut the artery and he blead to death on the run out.

Loosen Up
Reid