I have shot fox, coyotes, and woodchucks with mine. I have yet to have an exit hole and only seen one in a woodchuck and that is because my buddy hit it high in the back and it only went through about 3 or 4 inches of chuck, but it still wasn't a big hole. my furthers shot was on a coyote and it was about 150 yards, her mind told her to run but her body couldn't, she did a coyote a flips and was dead 3 feet from where i shot her. i shot her behind the shoulder. my son hit a chuck at about 50 yards with his and i told him to shoot it on the shoulder, he did, had a hard time finding and entry hole and no exit but the inside felt like crushed bone and jello. most animals shot with the fireball it is tough to find an entry hole, i lay them down for a couple of minutes one the side i shot them to see if some blood will come out and you usually get a couple of drops.
we all shoot the remington sps and UMC 25 grain hollow points.