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Jason, your cases have the beginning of collapse, the beginning of the first fold/accordion or the making of a bellows has started to fold inward, (the only way it can collapse), the collapse/folding ,first ring, can not be completed because the die body will not allow the case to fold outward, again, I use a modified die to make accordion/bellow/folded cases to determine if the case is work hardened, the modified die does not offer case support, when pressure is applied to the case it collapse in a catch release motion, something like using bricks for a stand, stacking bricks under an auto, place weight on the bricks and the bricks crush one at a time, bad habit.
F. Guffey
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