Caliber: 5.7x28mm FN - Weight: 40 Grains - Bullet Style: Hornady V-Max - Case Type: Brass - Muzzle Velocity: 2034 fps - Muzzle Energy: 256 ft. lbs. - Rounds Per Box: 50 - Boxes per Case: 40 - This caliber is great for target shooting general plinking and small game hunting. It features a 40-gr V-Max that offers explosive performance on game. This accurate flat-shooting round is an FN USA product distributed across the US by Federal Premium.