Fully Processed .357 Sig Reloading Brass Headstamps Are Mixed Fully Processed, Ready to Load Deprimed, Resized, and Polished 100% Brass Casings for Reloading 500+ Casings Reload with ease using Capital Cartridge fully processed .357 SIG brass. This fired reloading brass has been cleaned, deprimed and resized. The .357 SIG case is a favorite among shooters for its unique bottleneck design, which enhances feeding reliability and contributes to its reputation for accuracy and high velocity. Fully processed .357 SIG brass for reloading will reduce brass prep time for both beginners and experienced reloaders alike.