14pr case

I’m hoping that someone can tell me the dimensions of the British 14pr case, it’s a separate / two piece round and the case has mouth cut-outs like the 12pr 12cwt, it also uses the same primer as the 12pr 12cwt, I also know that there was a MkI and a MkII gun, if that helps and it’s a different case to the 14pr “Exhibition Guns” which ron3350 started a tread on, which is very good reading.

Thank you for your time and help.