The Winchester X22M SuperX 22 WMR 40 GR FMJ 50 Rounds is a reliable choice for rimfire enthusiasts. This cartridge features a 40-grain full metal jacket bullet, designed for accuracy and penetration. The 22 Magnum caliber offers a balance of power and control, making it suitable for various shooting applications. With fast shipping, you can get your hands on this ammunition quickly. The Winchester Super-X Rimfire cartridges are known for their advanced development techniques and innovative production processes, resulting in high-performance ammunition. This product is an affordable option for those looking to stock up on rimfire ammo. Product Features and Specifications: Caliber: 22 Mag Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 40 gr Muzzle Energy: 324 ft lbs Muzzle Velocity: 1910 fps Casing Material: Brass Rounds Per Box: 50