Wolf Ammunition Polyformance 300 Blackout 145gr FMJ Ammo is designed to be consistent, accurate, and affordable. These rounds feature a PolyFormance coating for smooth feeding and extraction. These non-corrosive, Berdan-primed rounds offer reliable ignition and functioning. Perfect for recreational shooting at the range or even doing some serious training, you can't go wrong with the Wolf Ammunition Polyformance 300 Blackout ammunition.