Winchester USA centerfire rifle ammo is the ideal choice for training or extended sessions at the range and provides several features such as no expansion, positive functioning, good accuracy, and no barrel leading.Caliber: 223 RemBullet Type: Full Metal JacketBullet Weight: 55 grMuzzle Energy: 1282 ft lbsMuzzle Velocity: 3240 fpsRounds Per Box: 20Boxes Per Case: 50Application: Target ShootingCasing Material: BrassHazair: YesAmmunition cannot be shipped to a P.O. Box, please use a physical address during checkout. For restricted state buyers (CT, IL, NJ), please email a copy of your state's credentials, and a photo ID along your order number to ffl@firearmsdepot.com within 5 business days to avoid cancellation and refunding your order. For California, Massachusetts and New York buyers, please have your dealer email us a copy of their FFL or Ammo Vendor License along with your order number to ffl@firearmsdepot.com within 5 business days to avoid cancellation and refunding your order. Your order will not ship without us receiving this information. Thank you for your cooperation