The CCI Pest Control Maxi-Mag Rimfire Ammo 22 Mag 52 gr. #12 Shot delivers a shotgun-style payload from your favorite rimfire rifle or pistol for fast, effective close-range pest control, and as part of CCIs Maxi-Mag series it pairs consistent propellant and dependable priming for tight, repeatable patterns you can trust on the farm or around the ranch. This 22 Winchester Magnum Rimfire load sends a 52-grain #12 shot column at roughly 1000 fps with about 115 ft-lbs of energy, which makes easier hits on rodents, snakes, and small nuisance animals inside barns, sheds, and outbuildings while minimizing over-penetration and collateral damage. The lightweight aluminum casing and bright yellow hull simplify identification in the dump pouch, and the rimfire shotshell format lets you use pistols or rifles you already own rather than carrying a separate shotgun for close work. Made in the United States, these Maxi-Mag rounds are a go-to for pest control professionals and landowners who want reliable patterns, predictable ballistics, and ammunition that performs consistently when quick, humane removal of pests is the objective.