Never worried about a blood trail
Always found a rifle shot buck or deer laying where I shot it.
After shooting deer with a bow, the first time. Figured it went some 50 yards in the thick brush. Took a compass out and took the final reading of the fleeing deer. On the first move took a exact reading. Found the deer twenty five yards later. Why do deer have to go far.
Never worried about a blood trail. Accurately shot deer don't run far. My deer hunting always started at a rifle range or bow range.