Predator257Roy
New member
I'm loading some subsonic loads for my Ar-10. I's a custom Armalite SASS and has the adjustable gas block. I was hoping the action would cycle when shooting suppressed subsonic rounds but it is not. I'm loading Winchester brass, Fed 210 match primers, and a hornady 178gr A-max. I've played with the powder and have settled I think on 10.2gr of Trailboss. I loaded from 9gr-11gr. 11gr had a bit of a snap sound to it and the 10.5 was just a little loader than I liked. 10.2gr was just a fart in the wind. Bullet drop was about a foot at 100yds. I've made shots with the dial set both ways, suppressed and not suppressed. Suppressed setting should be all the way open but stil no cycle. Any recomendations.