Underwood Ammo\'s Xtreme Penetrator 44 Remington Magnum ammunition features a precision 220-grain solid copper bullet in corrosion-resistant nickel-plated brass cases, delivering consistent ballistic performance. Engineered for deep straight-line penetration, this lead-free round achieves a supersonic muzzle velocity of 1,530 feet per second and is reloadable for those who prefer to handload. Solid copper, 220-grain Xtreme Penetrator bullet Nickel-plated brass cases, reloadable and lead-free Muzzle velocity rated at 1,530 feet per second This ammunition is designed for shooters who require reliable performance and advanced projectile technology in a .44 Rem Mag platform. Each box contains 20 rounds.