I know out of a 9" barrel getting around 1015 8.9 gr of imr 4198. But the bolt would only lock back was with a suppressor. I ran into a lot of problem with those projectiles. In other wors they suck. They cause a lot leading in the barrel. My advice is to melt those down and use this mold I have for 198gr and it is working really well for sub work. I have two molds for super if you ever want to try them out.