Howie: Keep going back. Them critters can absorb a lot and keep going. Similar story: Last March, a buddy on my place shot a fair sized hog by red light, over corn, with an '06. He trailed blood spots for two hours and found only a bone chip that looked like a leg, not rib. About a month later, over the same plot, he killed a 200 + pig with a limp. Seems it was healing nicely from a missing piece of leg bone. Go figure!