In a current Gunbroker auction for some “Diablo” brand 9mm, they show DKC 9X19 and PCM 9mm LUGER brass. I find that DKC is a known entity at the link below, but I don’t find much of anything on PCM.
touchstone/jmeter/queries/queries.txt at master · lucidimagination
efficient-trie/enVocabulary-45k.txt at master · usertomlin
Unknown 9mm Parabellum - General Ammunition Discussion
Meditação
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Some 9mm headstamps - General Ammunition Discussion
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Defence Industries 9mm drill round - General Ammunition Discussion