Thread: 223 sub sonic loads

Worth a go for the fun as you said. Have played around with 80gr SMK and AMAX projectiles over 6gr of trailboss in an AR. Action wont cycle and 99% of the time the action wont unlock I had the smack the charging handle with a big hunk of wood. In a bolt gun I'd have anither play but the returns aren't really worth the trouble in 223.