Gun, 6 inch BL Mk VII info wanted

[Mike Cecil]

Gents,

Looking for technical, ammunition data and especially crew drill info on the above weapon, used widely for coastal defence across the British Empire during WW2.

Also interested to learn about an item called a 'Clarkson Case' used to transfer the bagged propellant charge from the magazine to the gun platform.

Don't need originals: just the info.

Thanks

Mike