[T. O'Heir]

A Daisy Red Rider is a toy. You shouldn't ever have allowed its use, under any circumstances, for hunting anything. Never mind a cat. Feral or not.
The only thing you've taught a 16 year old kid is that killing is fun. He has learned nothing about ethics nor anything else.
"...had one that was picking on..." Don't be daft. Male cats fight over territory and she cats. They don't 'pick on' each other. Geezuz!