Dick:
I believe the VZ 33 is uncommon not common. It is the Brno action that Germans adopted as the G33/40, both small rings with milled lightening cuts below the stock line. I don't know if the VZ33 had hollow bolt knobs...anybody know?-- while G33/40s are around, you will pay through the nose for one.
Considering the price of the action and the work to do to it, the Brno 21 make more sense as said above.
The Husky is a 40 ounce action, too, like a G33/40, but not a true 98 (if your picky).
The FN Brownings small rings made for a few years in 243 and 308 are 37 ounce actions. But they are small ring, large thread like the Kars. They were made in the early 60s rather than the turn of the century so better metallugy. As a bonus they have a M-70 type trigger.
