Sellier & Bellot has been and industry leader for 187 years. Billions of rounds worldwide to over 50 countries, quality and attention to detail have given S&B a name that has become synonymous with high quality ammunition and ammunition components. This 20 round box of Sellier & Bellot .300 AAC Blackout 147Gr FMJ Ammunition is boxer primed, non-corrosive , brass cased, and reloadable. Sellier & Bellot manufactures a variety of handgun, rifle, and shotgun ammunition, as well as specialty calibers in the highest quality with a variety of projectiles for varying applications. Trust the name in ammunition that has provided the world with high quality ammunition since 1825.