The Hornady .243 WSSM Unprimed Rifle Cartridge Cases provide an exceptionally uniform and premium structural foundation for precision handloaders developing custom ammunition for the Winchester Super Short Magnum platform. These high-grade component cases are manufactured in small, specialized lots to meet strict quality control standards, ensuring excellent case-to-case consistency in wall thickness, weight, and internal powder capacity. Every piece features precision-measured wall concentricity to guarantee optimal bullet seating alignment within the case neck, minimizing runout to ensure a flawless chamber fit and clean bullet release upon ignition. Additionally, Hornady runs this brass through specialized pressure calibration tests to promote uniform case expansion during firing, which significantly increases the active reloading life of each shell over multiple firing cycles. Packaged as a loose component box of 50 unprimed brass cases, this American-made product features standard large rifle primer pockets to give competitive benchrest shooters and varmint hunters total control over their ignition properties.