1/72 Achilles round measurements?

[phat trev]

Building the the interior of a 1/72 Armourfast Achilles tank destroyer (great basis for some scratch building) but unsure how large the rounds need to be. Hoping to make a number of them from old sprue, sharpened at each end. I have a load of photos from builds found online so have an idea of sizing from them at least. 

[Tigerausfb]

583mm/72 or about 8mm total length

 

Andrew

[Kingsman]

17pdr APCBC round was 859mm overall.  Cartridge was 583mm and projectile 276mm (APDS only about half that).   Projectile was obviously 76mm diameter.  Cartridge base diameter was 135mm.  I can't find measurements for the diameter and taper of the cartridge case body.  About 125mm at  the base at a guess.  In that scale a few mm makes little difference.

[Bozothenutter]

https://i.postimg.cc/ZKqzv9MZ/resita-75mm-at-gun-shell-comparison-chart-v5-by-wingsofwrath-dexpgqv-pre.jpg

[Kingsman]

That gives the same basic dimensions but doesn't help with the case taper, shoulder length and angle etc.

 

Have you looked at whether 1/48 50mm (is there any?) or 1/35 37mm ammo might work? Diameters will be about right but there is length and shape to consider.

[Bozothenutter]

https://www.scalemates.com/kits/rb-model-72p11-76-2mm-oqf-17-pounder--941867