Does anyone have the case dimensions for this one?

Thanks,
Axel

Axel--Check www.quarry.nildram.co.uk/HMG1.jpg

The 3rd and 4th one in picture next to 50 cal
the second case.I have pic downloaded and case looks to be about .685 at base, about .620 at
shoulder, 3.2 in long, and about 3.9 in loaded length.
If I had a barrel of them I could make the
600 OK-2 belt and all, if base is that big.
And the right primer design.
Anyone know if they use big Berdan primers like
55 cal Boyes?Ed.