Maximize your range accuracy and small-game performance with Winchester Super-X 22 Mag 40 Grain FMJ, a time-tested rimfire load built for dependable cycling and flat trajectories. Backed by generations of Winchester manufacturing excellence, this high-velocity .22 WMR ammunition delivers consistent ignition, clean bore travel, and deep, non-expanding penetration with every pull of the trigger. Whether you are controlling varmints, punching clean paper targets, or honing fundamentals, Super-X delivers the punch and reliability you need downrange. Key Features & Specifications Caliber: .22 Winchester Magnum Rimfire (.22 WMR / .22 Mag). Bullet Weight & Style: 40 Grain Full Metal Jacket (FMJ) profile that retains its structural integrity on impact, preventing bullet fragmentation and minimizing meat/pelt damage. Muzzle Velocity: 1,910 fps for an ultra-flat shooting profile, reduced wind drift, and blistering rimfire speed. Muzzle Energy: 324 ft-lbs of clean kinetic punch delivered downrange. Surefire Rimfire Priming: Loaded with Winchester non-corrosive priming compounds for consistent ignition in cold weather and rapid-fire strings. Clean-Burning Powders: Specially blended propellants ensure minimal carbon and lead fouling, keeping your chamber and barrel clean across long days in the field. Package Quantity: 50 rounds per standard retail box. Intended Use: Small game/varmint hunting, target practice, and tactical rimfire training. Manufacturer Symbol: X22M. Winchester Super-X represents the gold standard in all-around rimfire versatility. While hollow-point rounds can heavily damage small game pelts or edible meat, the 40 Grain Full Metal Jacket design delivers clean, straight-line penetration without explosive disruption. Paired with near-centerfire velocities pushing 1,910 fps and rock-solid reliability across bolt-actions, lever guns, and semi-automatics, it is the go-to .22 Magnum load for shooters who demand hard-hitting accuracy without compromise.