Thanks Matt, you certainly are the man when it comes to this stuff. You are right it's not a Kwk36 projectile as I was told but more like a PzGr 39, though it's not yet in my hands to look at yet. I've come a wee way with my rounds. Today I fully stripped 3 cases back bare and now the Finnish paint is off it's become clear the primers are not gun blue rather they are painted the same colour as the AZ fuzes and one being bare. The yellow paint is darker than the flash shows, it's the same shade as the tabs on an old Luftwaffe officer tunic I had years ago. As luck would have it I have 3 C/22st primers on their way in as well as a single 88mm transport canister for the forth round. And now I'm working on the stencil marking for these. I'm having a hell of a time trying to find a third HE projectile, I find one and I've completed where I want to be with the 88s.
Thanks Phil, I did say that to my partner just the one in the corner, she no longer believes anything I say now.