Processed and PRIMED 10MM AUTO Reloading Brass Headstamps Are Mixed Fully Processed, Primed, and Ready To Load 100% Brass Casings 500 Casings Shop processed and primed 10MM AUTO range brass for reloading. Cleaned, processed, and primed with Ginex reloading primers for immediate use. Primed 10MM reloading cases are ideal for 10mm reloaders looking to save time without compromising quality. This 10mm primed brass is ready to be reloaded. Available in bulk quantities.