Myself and my father both have 300 Blackout ARs. 95% of the ammo we have has been trimmed down meticulously from 223 by my father and works great but is quite labor intensive. So imagine our surprise when we stumble across 100 or so in the brass bucket at the range! They are head stamped FC and 300 BLK but look to have some strange markings from being fired. I've never seen anything like it before (see picture) and was wondering if it is save to reload. The grooves shown go all the way around the neck and partially on the case and are evenly spaced and have a slight indentation that you can feel.
Safe to reload? If so, some factory brass would be nice without all the prep!
Thanks!
Safe to reload? If so, some factory brass would be nice without all the prep!
Thanks!
