CCI Quiet at 20 yards, suppressed. They are quiet, but....
Same gun, same distance, 10 shots CCI SV
I have other ammo that does better but it's not relevant to your question. The Quiet ammo is more than adequate for squirrel. I use CCI CB shorts for hogs....about the same velocity and a bit less lead. Only problem you have to sort out is whether or not you can hit what you're aiming at.......