Since there were no manufacturers of the semi rimmed ammo after the war all the stuff you are finding on the type 92 feed strips is jap or chinese production. A big problem with this stuff is the incredible ability to cause corrosion in record time. I've seen guns fired clean and within an hour the bore is rusty and fluffy. Chambers get pretty nasty too. All the ammo seems to have a mind of its own on timing too. Rate of fire goes up and down. I wouldn't shoot the stuff in a bolt rifle especially after filing rims down.