Thread: .223 Subsonic

I have tried powders Lilgun ,WSF ,AS50N ,, AR 2205 my barrel twist 1: 8 twist and a short bolt action
projectiles range from 45grain HP BEE to 69 grain HTBT
T/Boss is just easy as it fills the case better but one needs to be carful of other powders re double charges // or flash over as there is not enough powder against the primer . Heaver projectile are usually used for subsonic as they have more mass
All good fun but just be careful
cheers