The .223 Rem (5.56mm) "Steel Safe" Frangible Training ammunition from Ten-X nearly eliminates damage to steel targets and over-penetration in "live fire" houses. The cartridge is loaded with SinterFire's 55gr frangible projectile and significantly increases target life while maintaining positive function in duty weapons. SinterFire is a BATF approved frangible bullet. Steel Safe Ammunition is manufactured to the exacting standards of law enforcement. Ten-X Ammunition also offers departments the option of new or remanufactured brass casings. Remanufactured brass is inspected to the same specification standards as new, but for almost one-third the price. All Steel Safe ammunition is packaged in bulk (500 rounds per ammo can).