I understand that the 5.45x39mm “7N10” enhanced penetration ball cartridge went through several design changes over the course of its use.
Can anyone provide pictures of actual sectioned specimens showing these changes? Were there nomenclature changes to the improved models?
Is it correct that the only markings to identify the 7N10 is a purple case mouth seal instead of the normal red for a ball cartridge? What about the primer seal?
Who manufactures the 7N10? Only Vympel, or did others produce it?
Is there a list of known headstamps???