Been awhile, but probably a fox squirrel with a S&W Model 53 in .22 Jet, but using .22 LR in the inserts. That handgun took everything from cottonmouth moccasins to coyotes and was my only handgun for years. Squirrels, rabbits, snakes, (many snakes), armadillos, a couple skunks, one bat (flying), and at least two coyotes. I shot it about 99% of the time with LR in the chamber inserts because as a kid I could not afford the .22 Jets. I foolishly traded it for a High Standard auto. A good gun in its own right, but not nearly as valuable as the Model 53.