7.7x58SR Arisaka green primer

What’s the significance of green primer? Dan Dietz has it marked as “MG”

Vlad,

Check out this previous thread on the subject.

viewtopic.php?f=8&t=7536

Dave

Thanks for this thread, it stopped me from posting more Arisaka with green mouth seal. I don’t know what confuses me more, Jap ammo or IAA search engine.