Looks like you screwed the seating die to far down (or the case wasn't trimed to length correctly), to correctly set the seating die place a sized case in the shell holder screw the die down until it touches the case mouth, then screw the seating die out one full turn and tighten the die lock ring. The die is now set and locked in place and adjust seating adjustment for proper over all length. If it were me I would pitch the cases and maybe do a little more reading until you understand the reloading process better. William
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