Confused on this one, my friend has a remy 700 vls. Rounds fired in that rifle have been resized with neck size die and will not all rechamber. We have even taken brass that has been fired from that rifle and tried to rechamber, goes all the way but last little bit, quater inch or so. Seems that the are at case web is expanded to much. The only brass that is resized that seems to fit is brass run through small base dies. What's the problem here, chamber dimensions, pressure, heat ?