I shot a very large whitetail buck at 30 yds with a 7mm ttsx. Hit an inch behind the shoulder and exited the far shoulder, breaking it. He ran 300 yards and disappeared behind a cluster of trees. I took my pack and gear up the hill and dumped it to where I could drive my truck. Grabbed my drag and field dressing kit and head down to the deer.
When I reached him, I set my gun against a tree and grabbed his antlers. That buck exploded on me, knocking me over and he took off! I ended up shooting him again and recovering him. I have killed truckloads of deer and never had that type of performance from any ammo... not even cheap OTC stuff. The bullet had gone throught the heart and left a pencil hole, then broke the off shoulder. There was very little tissue damage. I quit using ttsx bullets that day. They did shoot awesome groups though.