flintsghost
Member
I have used 22 short CB rounds in a Anschutz 22 rifle with 24" barrel indoors and the only thing you can hear is the firing pin dropping. They make no sound even without a supressor. I have used them for a long time as an indoor pistol round with my high standard Olympic and they make very little noise but I was surprised shooting them out of a rifle. For penetration, I can't imagine they would perform well although they do take care of small game and rodents.