British Ordnance Collectors Network

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3.7cm hartkern

  1. Weasel

    WW2 German 3.7cm Hartkernmunition Projectile

    I had the good luck to get hold of one of these recently never thought i would find one. I have a query regarding the case to go with this projo, I have seen it in the 3.7 x 263B Flak 18 case but it only has one groove for a case crimp where as i thought the other 3.7 flak 18 rounds had a double...