Rare DWM cartridge known in only a few, (probably less than ten) specimens. It is a different cartridge than the 6.5 x 55 SE in that is has a slightly larger case diameter as well as a different shoulder. It was listed in the DWM case book as “Kal 6.5mm Fried Krupp” and probably dates from the late 1890’s but did not appear in the 1904 DWM catalogue. (Dixon Ref. M50)