Well, the experiment failed. The brass formed the shoulder but the neck is too thick and won't finish up to length without cracks. I would buy the chamber insert from Numrich if I knew it would work- but comparing the two cartriges I don't think it will and still have reloadable brass.
It's too bad Privi won't produce this cartridge; they would sell a bunch. A million vz52s are out there somewhere......
As for now, it's going dormant- I have other projects to pursue.
I did discover that 6.8 SPC will fit the magazine and well enough on the bolt face to extract. Hmm.
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