Hi,
Not easy to read, except for japanese speakers, but nontheless interesting :
Technical report of Army Engineering Headquarters First Laboratory - Vol.58 : Survey report on captured ammunition, April, 1939
(many drawings of projectiles and fuzes)
https://www.digital.archives.go.jp/das/image/F0000000000000218515
Cheers,
S.
Not easy to read, except for japanese speakers, but nontheless interesting :
Technical report of Army Engineering Headquarters First Laboratory - Vol.58 : Survey report on captured ammunition, April, 1939
(many drawings of projectiles and fuzes)
https://www.digital.archives.go.jp/das/image/F0000000000000218515
Cheers,
S.