Well let me tell you a story about an elk hunt this year. I shot a small 3x4 bull at a water hole at approx 54 yards PASS THRU with an easton axis 400 with wasp boss bullet. I thought the shot was good and the guy I was with swore up and down it was good. A little high but good front to back. The next morning we found a very small blood trail and followed it for 400 yards and then it dried up! We followed tracks a little longer and then lost those as well. 7 hours we looked for that elk and never found it! Nor enough blood to convince us that it had passed. The thing ran straight up hill and over the top. SO TAKE IT FOR WHAT IT IS WORTH I AM A BELIEVER!!!