.410s and 20 gauge’s are a blast. .22 WMR is smoking.
“22 WMR is smoking.”
I think the .22 mag is a bit too much for squirrel. I always use CCI Stingers (screaming fast .22 cartridge) on squirrels, and I go for head shots (most humane, and minimal damage to the meat, if any). I use a Marlin 25 with a 3 x 9 scope.