WW1 6 pounder shells

[Gambardier]

I'm looking to pick up some 6 pounder shells for my WW1 Tank Crew display - i've seen images of Hotchkiss 6 pounder shells (the long type, used as a naval gun and used on the Mk I, Mk II and Mk III Male Tanks', which have a taper at the top of the brass shell case. As well as looking to pick up some of these, i'd also be looking to pick up the shells for the later, shorter 6 pdr 6 cwt from the Mk IV onwards - was there any difference in shells though? I'm certain i've seen 6 pdr shell casings from 1917 and 1918 which were shorter in length and of the same diamater with no 'neck', would these be from the 6 pdr 6 cwt?

 

[Quatermass]

The 6-PR 8-CWT and the 6-PR 6-CWT MK II used the same shell case (57x307R) but with different propellant loadings.
The case for the 6-PR 6-CWT MK II had the lower half of the case coloured with a bronzing liquid to differentiate it from the 'long barreled' ammunition.

 

[Gambardier]

Many thanks - do you have any images of the mk II gun case?

 

[Quatermass]

6-PR 6-CWT Mk II and ammo.

 

[SG500]

Attached (on the link) a photo of what I think you've described.
Dave.
http://www.bocn.co.uk/vbforum/6pr-6cwt-query-t62810.html?t=62810