I just found this 20mm drill cartridge from the German Kriegsmarine. I haven't seen this type before in 20mm, so my question is, is it a rare cartridge?
From what I can see it is stamped "M", "Ex." and "P". I believe the "M" stands for "Marine", but what does the "Ex." and "P" stand for?
From what I can see it is stamped "M", "Ex." and "P". I believe the "M" stands for "Marine", but what does the "Ex." and "P" stand for?