Starline Brass 8.6 Blackout Rifle Reloading Brass - 50 Count - Starline Brass is known for producing some of the highest quality brass cases on the market. Made from a 70% copper and 30% zinc alloy, each case is vertically drawn during manufacturing for consistent wall thickness. To ensure uniform metallurgy across all lots, cases are annealed between each draw. Every piece is also hand-inspected to maintain Starline's high-quality standards. Located in Sedalia, Missouri, Starline has been serving reloaders for over 30 years. Whether you're reloading for precision or volume, you can trust Starline Brass to deliver reliable performance. These are new, unprimed cases-not loaded ammunition. Bulk brass should always be full-length sized, trimmed, and chamfered before loading.