300 Blackout

This 300 Blackout is converted from 223 and measures at 1.358” +/-.05”. It is made from .013” neck thickness or less to work well with .308 and .309 projectiles. It is sorted to remove thicker neck cases that won’t gauge when loaded. We check 3 times to remove the thicker cases and add extra in case some still don’t gauge due to duplicate head stamps.