Agreed... 22lr, short, 22long, there are some really interesting loads. I think I bought some 22lr quiet ammo and ran it through my silenced 22, it wouldn't cycle the action, but it is super quiet. I love it, just have to manually cycle the action. I'll seek out and buy a few boxes when I see the more novel 22 ammo. I think it's a great item to own and I'm happy the manufacturers are making the rounds that are useful for small game, pest control and plinking.I figured this out by accident as a kid, when I asked my dad to buy some 22 rounds to shoot in the back of the neighborhood. He gave me some CB caps, 22 HV shorts, and 22 HV LR rounds. We learned pretty fast that the CB caps were awesome but not too powerful. Great for plinking and shooting snakes and such. The HV LR made way too much noise, even in the back of the neighborhood. The 22 HV shorts were the Goldilocks round. Would easily take down a squirrel or rabbit without massive noise.
Fast forward to today. CCI SV LR, 1070 FPS. CCI HV Short, 1080 FPS.
Just buy 22 LR. There are so many different types of rounds today that are even quieter than the shorts of old days. CCI LR Quiet is a 40g bullet at 710 FPS in a rifle. Without a suppressor, that is similar to a spring action 22 airgun. With a suppressor, you only hear the bullet hit the target.
I think those are CB caps. They are quite & tiny. I’m not sure any gun will cycle them because of how short they are. So they’re pretty much single shot ammo. With Low power ammo like that you have to make sure the round left the barrel especially in rifles. You don’t want to shoot a cci stinger after a squib round gets stuck in your barrel.also there is 22-ammo produced that only uses the primer as the propellant, and that is pretty interesting stuff also.