11-21-2023, 02:27 AM
I have never had this problem. I would make a dummy round (no primer or powder) and test. That will tell you if die neck tension is out of spec, especially since you are crimping. Maybe even a bullet spec issue. At least that would rule out a potentially compressed load as the cause. I have never used Lee dies. I would also throw mighty armory dies into the mix, especially if loaded for different rifles. I would rule out Redding seating die if you are doing compressed loads and go with the forester seating die on the high end. Also when loading pause for a second at the top of your stroke to make sure the brass is not flexing. Only other thing I could think would be if your bullet is jamming into the lands and there is enough force upon extraction to pull the bullet slightly. I doubt that is the case, but you might want to check anyway-to rule it out.