Peterson Brass 338 Lapua Product Information *The flip top cases are considered protective packaging and cannot be replaced if cracked during shipment. Box of 50 Made in the U.S.A. The .338 Lapua Magnum Brass Cartridge is manufactured on Peterson Cartridge'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 Cartridge Co is committed to producing Match-Grade Brass that enables our customers to get more reloads per casing than industry average. Warning: Only use Peterson Cartridge Co. casings in firearms in good condition, designed, marked, and chambered for this cartridge. Do not use Peterson Cartridge Co casings for "fire forming" or any other purpose other than what they were designed and tested for. Peterson retains no responsibility for the enclosed casings if they are used outside of the manufacturer's recommendations. This is not loaded ammunition.