WW2 Firearms trivia question

[Greybeard]

Hello Paul,

Pretty close.. the type 99 fired a 7.7mm round, and the type38 a 6.5mm. If I recall correctly, the type 99 with the larger bore, actually operated at a lower peak pressure than the 6.5mm did. I recently read an American Rifleman article about the type 38, and it was designed to handle chamber pressures approaching 75,000 CUP.. nearly all other firearms are designed for 50,000 CUP - including the mauser.

Now to figure out the next question..

-Greybeard