This one, which occurred during out early ML season this year, still has me scratching my head. A small 8 point walked slowly by broadside at about 30 yards. I was 17 feet up in a treestand and I held just behind the shoulder for a heart shot. The edge of the field he was in sloped away, so the shot was at a rather steep DOWNWARD angle. At the shot, he fell and was DRT. The bullet had hit exactly where I aimed (I am pretty reliable at 30 yards) but there was no exit hole. This year I switched from XTP's to 300 gr Gold Dots to try to get better penetration. While I was looking over the deer, my g/f walked out of the woods looked at the deer and noted a lump at the top of the deer's neck about 8" behind the head. I cut the hide, and the "lump" was a perfectly expanded Gold Dot. Somehow, that bullet, pushed by 90 gr Pyro RS, had hit the heart, turned right and angled UPWARD through the neck stopping just under the hide. In several hundred deer over 55 years, I thought I had seen it all. I guess not.