[Last Dakotan]

What was the original chambered in?

9mm Lugar?

[yarddog]

They were chambered for the 7.92X33 Kurtz otherwise known as the 8MM short. It was basically a shortened version of the 8MM Mauser.

[riverrunner]

It was chambered in 7.92x33 just a bit differant then the 7.62x39 use in the AK47