I'm a big fan of .22 shorts.
I have several rifles that shoot them just fine and one, in particular, that is especially fun to shoot.
It's a Browning ATD, chambered in .22 short and it functions reliably with CB shorts. That's not a typo, CB shorts reliably operate the action. When I bring it to the public range it's not at all unusual for somebody to come over and inquire if the rifle is suppressed. No, it's not, but it sure is quiet-much quieter than my spring action pellet rifles.