I needed to fireform some 6mm Remington brass to 257 Roberts, so I loaded up 49 rounds (screwed 1 case up) with 2400 and shot 4 foulers and then 3 15 round groups @ 100 yards. 14.5 gr of 2400 was 2.309" with 14 in 1.551, 15 gr of 2400 was 1.801 with 14 in 1.720" and 15.5 gr of 24 was 1.594 with 14 in 1.171". There was no cleaning between the groups.......I'll neck size these cases and retry.Attachment 220421