Designed with sport shooters in mind, USA Ready is a select grade ammunition and components offering improved ballistics at a value price. This performance-built ammunition offers optimal accuracy, and is ready for competition, training, or just a day at the range.SpecificationsManufacturer: WinchesterCaliber: 10mm AutoNumber of Rounds: 50Bullet Type: Full Metal Jacket Flat Nose (FMJFN)Bullet Weight: 180 grainCartridge Case Material: BrassMuzzle Velocity: 1250 ft/sMuzzle Energy: 624 ft-lbsPrimer Style: CenterfireLead Free: No