Can anyone provide any background on the uniquely Belgian design Blank for the .50 BMG caliber (12.7x99)? I believe they refer to it as the M1BG, but I can’t confirm that.
Is that designation correct?
Why the long neck blank design instead of the established M1A1 design?
Any other details?
(It’s the green tipped blank, in the center of the pic.)
Samples I have are green sealant tips 50 FNB 81 and 50 FNB 87 and red sealant tips 12.7 71 FN