Brenneke slug ammunition is produced with high quality materials and as undergoes strict quality control to ensure their customers receive ammunition in excellent condition.The Black Magic Magnum Ammunition features the CleanSpeed Coating that reduces lead fouling inside the barrel and muzzle. One of the heaviest slugs on the market, it offers excellent accuracy and flatter trajectory with moderate recoil. Ideal for large and dangerous game. Can be used in all barrel types. In testing, it achieved 2" groups at 50 yards and 3" groups at 100 yards in smoothbore barrels. In order to have a safe shoot, Brenneke recommends the following Safety Tips: Only use Brenneke slugs in modern shotguns known to be in good condition. Make sure you use the proper length cartridge (2 3/4 inch or 3 inch) your gun is designed for. Make certain you know if you are shooting a rifled or smoothbore barrel, and using the proper slug. Check with the gun's manufacturer if necessary. When using a scre...