We have the Type 100 in the game, So the Type 1 TERA
can be added of which only 150 units were produced for testing It was based on the Arisaka 38 Carbine so used 6.5m, but it was discontinued in favor of the Type 2 TERA.
Type 1 TERA
We can add the Type 2 TERA, It was based on the Type 99, so it used 7.7mm, which was produced between 19,500 and 21,000 units.
And was widely Used by Japanese paratroopers in Philippines in 1944 and 1945.
Not much info about it, but such conversions were rather a personal thing made by gunsmiths than anything, so super rare.
My guess is that its rather foreign thing where the native ammo type wasn’t any obtainable
‘Shisei 7.7mm Jido Shoju Otsu-Go’
or ‘Experimental 7.7mm Semi Auto Rifle Type B’
Is the most advanced japanese semi-automatic rifle of WW2, featuring 7.7mm cartidge and 10 round magazine which didnt have any stripper clip feeding, which is the downside of Type 4 Rifle (long reload)
In Enlisted it could be called, ‘Kokura Type B Rifle’
It has roughly 775m/s velocity with the 7.7mm bullet. (24.8 inch barell)
It had excellent chamber efficiency (shortest throat and least freebore), gas system taps very late, so peak pressure is fully used.
Roughly 775-780m/s velocity with the 7.7mm bullet. Therefore its a high damage semi-auto rifle and BR IV worthy.
maybe its possible there is some 10 round variant but the only variant we have is 5 rounds.
10 rounds with a scope can be 小仓的试作自动步枪甲型 Ogura’s prototype automatic rifle A Which is variant of the Ko rifle that is chambered in 7.7 however there is not much info about it with solid evidence that really is chambered in 7.7 same 7.7mm as the Type 99 rifle.
The Ogura 10 rounds is Ko rifle variant chambered in 7.7 mm however there is no much evidence about it and the other one is better documented
The one that you called ‘‘Experimental Semi Auto Rifle Otsu-Go/Type B from the Ogura Arsenal - 7.7mm - 10 rounds’’ is having another name that is even by your own image called Kokura so there is some name conflict. But there must be more data on the subject there is no offical name for its Kokura
In February 1958, M.D. Waite published an article in American Rifleman, “Japanese Rifles and Carbines”, describing it as a lock-bolt recoil rifle that used 7.7mm edgeless rounds, used a 5-round cartridge magazine, and was equipped with a scope mount. Some English sources call it an automatic rifle manufactured by Kokura Arsenal from 1941 to 1943, and more research is needed
This one its from forgotten weapons Ian McCollum in the Smithsonian gun room, 2015
And the Ogura is a variant of Ko rifle that is supposed to be chambered in 7.7
But you can ask DELAVR about it he is the wikipedia for Japanese rifles
