I noticed my FC .308 cases don't hold as much powder as the R-P cases. These are all sized in the same RCBS SB die, and trimmed to the same length. I am using a "max" load of Varget(according to Hornady 45.0gr). The R-P case held all the powder just below the Neck/Shoulder junction. The FC cases held all the powder, but it was up into the neck, and made seating more difficult. Is this going to give me pressure problems? I don't think I would be worried much if I didn't have to turn my seating die down another couple thousanths to get the 155 Amaxs to seat to the same length as in the R-P cases. I also wouldn't be too worried if this wasn't a "max" charge. I have fired this exact load with no pressure problems in the R-P brass, but have not used the FC cases for this load. Any one care to jump in and tell me if I will have any problems with these?