PABB, I agree with Olink but can accept your scepticism. I shot a mulie this past season that defied the odds. Using NAP Shockwaves on a quatering away shot, the arrow blew through the liver, left lung base, clipped the left ventricle (heart) and out via the right lung apex. This animal bounded off, went under a fence line and into a bluff of trees 250 yards away. I was confident of my shot and the blood trail supported my suspicion that it was a lethal wound. On a lesser blood trail I would have doubted the shot and it's outcome! In contrast to this, a whitetail doe succumbed about 80 yards after being shot through the chest - died in midstride. Just another variable in the equation!