Tony Williams
Well-Known Member
The 55x450B (or 55 x 448B) cartridge was being developed in Germany at the end of WW2 for the Rheinmetall-Borsig Flak 58, the Rh-B MK 114 aircraft gun, and also I think for the Mauser MK 214B aircraft gun.
Does anyone have a photo of this round, or can advise on the appropriate colour for the steel case?
In fact, do rounds or cases ever become available for purchase?
Does anyone have a photo of this round, or can advise on the appropriate colour for the steel case?
In fact, do rounds or cases ever become available for purchase?