I recall one fellah playing with wax bullets,

by former hater of plastic, Tuesday, February 13, 2018, 21:08 (2476 days ago) @ bj

and one day wife screamed of a mouse in the kitchen. The guy thought the wax bullets perfect for the job, told his wife not to worry, and blew a hole in his baseboard and vaporized mouse over much of the kitchen.

Hearing of that likely saved me from doing it. A .45 case with primer hole enlarged to prevent primer backing out is the perfect size for many foam ear plugs, the nerf wadcutter, and when fired, will punch a hole in a paper grocery bag at 5ft, and rebound and settle somewhere faster than the eye can follow, and might be a good indoor pest KOing round.