I just finished seating some .452 dia. 230 gr cast lead round nose bullets. The cases were from Winchester 230 gr FMJ factory cartridges. I noticed that the cases are noticeably swelled in the area of the seated bullet. The case diameter before seating was .468, the case dia over the seated bullet is .472, an increase of .004 on the diameter. is this a problem? I have not applied a crimp to these yet.