Steel stub case

[ydnum303]

I recently acquired the stub case shown. It is made of steel (that appears to have been "brassed", as it is yellowish in colour), and has an external mouth diameter of 160mm. The steel base is 60mm high, and a plastic ring has been fitted over the mouth, which brings the height up to 78mm. Rim diameter is 169mm. A primer stamped L10A1BN 90, and filled at Chorley in August 1990 is screwed in.

There is no "proper" headstamp, but engraved by an electric pencil appears to be:-
No.91
DD/062/C10 [or possibly 010]/ISS C

Due to corrosion these marks are hard to read, so may not be either correct or complete!

Can anyone tell me what gun this was for, what projectiles did it fire, and what the dimensions of the whole case were, please? What do the markings mean?

Thanks in advance,

Roger.

 

[HAZORD]

It has an electric primer.

 

[charley777]

120x555R to 120x564R
Various lengths ...semi-CCC ( semi combustable cartridge case)
For tank guns
The German and US rounds (smoothbore guns)have a 78mm stub case ..so shorter than the UK (rifled bore) which are 105mm
Smoothbore stub cases have a 169mm rim diameter .... possibly the 105mm UK stubs have a 165mm diameter.
Yr stub seems to be also UK so it is presumably for a smoothbore gun also used by them.
Various experts on BOCN will be able to confirm (or not) ...and also provide APFSDS info etc

 

[charley777]

So here is a US stub case for comparison

 

[kahu1]

Some dummy rounds for the 120mm gun. Australian M1A1 Abrams.