“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.
I dont eat squirrels but we’ve almost always have pest issues with them tearing stuff up. I’ve probably killed >100 with pump air rifles, 22 cb caps, and as a kid my 30# recurve bow probably took 200+