I think your problems could be traced to using "range" brass- you have no idea how many times it has been fired or with what loads or "over loads" or in what oversize chamber and then worked down again, maybe more than once.
Perhaps using range brass is being pennywise and pound foolish? JMO.
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03man(Don Voigt); Luger student and collector.
Looking for DWM side plate: 69 ; Dreyse 1907 pistol K.S. Gendarmerie
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