The Underwood Ammo XTP 500 S&W Mag delivers exceptional stopping power with 350 grain jacketed hollow point bullets and impressive ballistic performance of 1912 FPS muzzle velocity and 2842 ft lbs muzzle energy.Underwood Ammo XTP 500 S&W Mag ammunition350 grain jacketed hollow point (JHP) projectileNickel-plated brass casing for reliable feeding and extraction1912 FPS muzzle velocity for flat trajectory2842 ft lbs muzzle energy for maximum stopping power20 rounds per boxEngineered for hunting large game and personal protection this premium ammunition provides consistent accuracy and terminal performance for .500 S&W Magnum revolvers.