Have 3 baffling cartridges, and I’m not a military collector so my references in this department are limited. Check lots of past threads, but no matches that helped. First photo has 2 7,92x57. Left, with red sealer/markings, Belgian h.s. F N 40, red annulus seal:
Bullet 8,15 (.321), steel jacket
case 57 exact.
Right, green tip, black annulus, h.s. K43 B1Z:
Bullet 8,09 (.318), copper washed steel jacket
Head 11,85 The green tip looks ??? I have 3 and all look like the paint was ‘gobbed’ on, so…
The third is a 7,65 Mauser. I will assume the VS to be at 12 o’clock, so the head stamp is: VS 40 V 1.
Bullet 7,79 (.307) steel jacket
Head 12,29 - very heavy ring primer crimp
My research turns up bits and pieces, but nothing definitive. I have encountered the red ID markings on some British and French military, but not on FN stuff, before. Any help is appreciated.