Product Description Winchester Super-X rimfire ammunition is built for reliable performance and time-proven dependability in the field and at the range. This .22 Winchester Magnum Rimfire (22 WMR / 22 Win Mag) value pack is loaded with a 40-grain Jacketed Hollow Point (JHP) bullet designed for effective terminal performance on varmints and small game. Packaged in a convenient 150-round value pack, it&';s a great choice for high-volume shooting while maintaining the consistent quality the Super-X line is known for. Product Highlights .22 Winchester Magnum Rimfire (22 WMR / 22 Win Mag) rimfire ammunition for varmint and small game use 40-grain Jacketed Hollow Point (JHP) projectile for controlled expansion and on-target effectiveness 150-round value pack-ideal for range days, sight-in sessions, and hunting prep High-velocity performance rated around 1910 fps (manufacturer-listed performance from common test data) Winchester Super-X line-engineered for consistent ignition and dependable function Specs Brand: Winchester Ammo Manufacturer Part Number: X22MH150 UPC: 020892103177 Cartridge: .22 Winchester Magnum Rimfire (.22 WMR / 22 Win Mag) Bullet Weight: 40 grain Bullet Type: Jacketed Hollow Point (JHP) Rounds Per Box: 150 Muzzle Velocity: 1910 fps (ft/s) Muzzle Energy: 324 ft-lbs Cartridge Case Material: Brass Primer Style: Rimfire Intended Application: Varmint & Small Game Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.