Backed by generations of legendary excellence, Winchester "USA White Box" stands for consistent performance and outstanding value, offering high-quality ammunition to suit a wide range of hunter's and shooter's needs.image Specifications and Features: Manufacturer: Winchester Caliber: .22 Long Rifle Number of Rounds: 50 Bullet Type: Lead Round Nose (LRN) Bullet Weight: 40 grain Cartridge Case Material: Brass Muzzle Velocity: 1255 ft/s Application: Target Shooting Primer Style: Rimfire Muzzle Energy: 140 ft-lbs