Founded in Pittsburgh, Pa., Peterson Cartridge was built with one main goal: to produce extremely consistent, American-Made brass rifle casings which are designed around, and for, long-distance shooters. The .338 Lapua Magnum unprimed brass is manufactured on Peterson's new, state-of-the-art case line which uses cutting-edge technology to produce some of the most precise and consistent casings on the market. Peterson is committed to producing Match-Grade Brass that enables customers to get more reloads per casing than industry average. Comes packed in a high quality plastic reusable ammo box. Peterson 338 Lapua Casing Box of 50 PCC338LP