He's stepped WAAAAAY over the line telling Cameron that cats are target practice and I'd definitely put him in his place. It's your home. You have the right to throw his butt out. Knowing Ashley the way I do from all you've told us, she's gotta be out of her mind. Cameron is way to young to learn about guns, be near them or taught that it's okay to hurt litttle innocent animals. I'd send this jerk packing.