I'm having an issue reloading 458 SOCOM. After resizing, the base of the brass case is .542 instead of .538. these cases will not chamber in the rifle they were shot out of. all other dimensions are correct. I contacted Lee Precision, they offered to measure the die if I sent it to them. But they also said that the sizing die wouldn't size the last 1/4 inch of the case. this is where my problem seems to be. Anyone else having this problem and any solutions? The cases do not have any noticeable bulging or signs of over pressure.