British QF 3" & 4" cartridge case questions

[charley777]

Greetings to all...

I have been reading David Ibbetson's excellent book ...
British Artillery Ammunition, Volume 3, Quick Fire Guns.

It raises a few questions relating to cartridge dimensions.
Most entries provide this information but there are a few where presumably such data were unavailable in the records consulted.
It is, however, quite possible that some of the knowledgeable members of this forum can fill in a few gaps.
Either from specimens or rare documents

So i have already asked about the 10 Pr Russian cases...
These are the others where data is missing...

3 inch 4 cwt fixed
3 inch 16 cwt fixed
3 inch 23 cwt fixed
4 inch Mk 6 seperate
4 inch Mk 7 fixed
4 inch Mk 8 fixed
4 inch Mk 9 fixed

Any information gratefully received
Thanks very much

 

[mdot633]

I just went through Hawkinson's book and couldn't find mention of any of those...now I'm now curious too!

 

[charley777]

Yes i have that book...
It's a great information source.
But sadly there is a lot of missing British ammunition data.