I’m new to air rifles but not new to shooting/hunting however raccoons are giving me a hell of a problem. I got the Benjamin trail np xl in 25 cal at the suggestion of air gun depot and am shooting jsb exact king heavy pellets at 33gr. I’ve cleanly dropped 2 possums with vital shots but raccoons are giving me some trouble. The first coon I took a clean shot to its lungs from about 20 yds and it dropped instantly, after about 5 seconds it got life back in it and scooted away faster than I could reload and take a follow on shot. I’m confident it’s dead but I’d prefer a clean kill… so I decided head shots only from now on. I had a coon tonight inside of 20 yds, put a clean shot at the top of its head (shooting down on it) and it didn’t even drop, just grunted and scurried into a bamboo thicket. Is there a sweet spot to hit on raccoons OR should I look to swap out pellets or to a different rifle?