Tonight I have been trying to resize some cases but have come across a problem I haven't had before - a case stuck solid in the die. The cases are federal .243 and have been reloaded six times. I checked the adjustment of the die as per the manufactures (lee) instruction and I have it set correctly and can see no obvious obstructions in the die to cause the cases to stick.I can see no signs of pressure on the cases and the primers are not flattened after firing so I am wondering if they are becoming hardened and that is whats causing them to stick? The cases were well lubed before resizing. Has anyone any ideas/advise? And yes the stuck cases were a proper bugger to get out!