We are all aware of all the funny variations in 7,7 mm japanese WWII ammunition (rimmed, semi-rimmed, rimless, for rifle, for machine gun, etc, etc).
But I didn’t know that the 6,5 mm cartridge also came in two flavors: standard for rifle and reduced charge for light machine gun. At least that’s what I have read in this book: TM-E 30-480, Handbook on japanese military forces, 15 september 1944.
This is quite peculiar because as far as I know, ammo for machine guns, if different from ammo for rifles, has always its charge augmented, not reduced.
The light machine gun was the model 11 (1922), which seemed to be prone to stoppages if full power ammo was used. The gun was fed via a hopper feed which held 6 5-round clips of ammo, and the book says:
Now has anyone heard of this reduced charge ammo marked “G” on the packages? Has it shown up in the surplus market? There were any identifying marks on the cartridge itself?