subsonic rounds that will work and cycle?

[roadkill45]

yup, CB longs are still a little loud, but i shoot them in the garage with the cans on and never had a complaint. also a good round for the porch where the pigeons and doves make constant nests. neighbors rear, left, and right with 8 foot block wall in between us and they don't hear a thing and no more bird poop down my patio column! good on the cat too that kept crapping in the sand on the side of the house, but we won't elaborate on that one!!