Chinese 10.5mm experimental cartridge

#1

IMG_20181106_183638
IMG_20181106_183638.jpg2976x3968 1.63 MB
IMG_20181109_221959
IMG_20181109_221959.jpg3070x1903 933 KB
IMG_20181109_222025
IMG_20181109_222025.jpg1619x1590 592 KB

#2

10.5mm cartridge compared with 12.7×108mm

IMG_20181109_222100
IMG_20181109_222100.jpg3442x2582 1.39 MB

#3

And I measured this cartridge. I hope it could be helpful

IMG_20181109_221009
IMG_20181109_221009.jpg2868x3210 1.58 MB

#4

Magnum, thanks a lot for the measurements!

Is the bullet jacket brass and no soft iron?

#5

Neat to see, thanks

#6

Thank your for the excellent measurements of case and bullet. Do you know the bullet weight?

#7

Brass clad steel jacket

#8

I’am sorry，I don’t have any instrument to measure the weight

#9

This is the pic I am looking for a long time!

I believe this was developed in the mid-late 1960 to either as the replacement or supplementary the 12.7x108mm for heavy machine gun. The bullet suppose to have higher velocity. It suppose to be easily re-chambered in the existing Type 54 (licensed build DShk-M) by a barrel swap. The issue is that with 10.5 caliber the Dushka’s rate of fire jumped to over 1000 rpm. The ballistics is not enough of an improvement to warranted a caliber change. The project was shelved in the early 1970s and before the Type 77 HMG came into service, which I think it could have been a viable caliber for the new direct gas operated HMG.