NOT KNOWN DETAILS ABOUT 223 REM 62GR COLT DEFENSE AMMUNITION 20RDS

Normally the round will do the job decently in an extended barrel but not complete adequately outside of a 3″ barrel. Which compound The full velocity vs excess weight and expansion challenge which you stated.When I cleaned the gun, seen that barrel and parts were not filthy filthy. Minimal comprehensive cleaning and was back again in business en