Bulk Pistol Brass from Top Brass is 100% load-ready, guaranteed-once-fired military brass that's been fully reconditioned for your reloading needs. Brought to you fully processed, sorted, deprimed, reamed, cleaned, full-length sized, polished and certified by Top Brass. All rifle (.223) brass is military once-fired and has received a case-mouth trim to ensure consistent length, while all military/commercial-mix 100% reconditioned pistol brass is fully resized for consistent, uniform diameter on all shell casings. .300 Blackout is formed from once-fired military 5.56 NATO brass casings. Plus, Top Brass guarantees all reconditioned brass products are within SAAMI specifications for all calibers.