Founded in Pittsburgh, Pennsylvania by Derek Peterson and his two business partners, Peterson Cartridge was built with one main goal. That goal is to produce extremely consistent, American-Made brass rifle casings which are designed around, and for, long-distance marksmen. Unlike most of its competitors, Peterson Cartridge has devoted its entire facility, machinery, and laboratory to producing only brass rifle casings. Specialization is the driving principle behind Peterson Cartridge only producing one component of a multi-component finished product. In our mind, if you want precision projectiles, purchase them from a company that specializes in projectiles. If you want consistent propellant and primers, purchase them from a company that specializes in propellant and primers. And if you want extremely precise and consistent brass rifle casings, purchase them from us, Peterson Cartridge. We are a proud member of the Peterson Brothers, Inc. team.