Thanks. guys. I already tried Nitroexpress...no luck there either.
I saw and handled the rifle today. It turns out that Ulrych is the name of the small independent gunmaker/engraver that put it together, on what was described to me as a Brno action. It was beautifully done, excellent fit and finish, super wood, and absolutely outstanding metal engraving. The wood was checkered with a fish-scale and oak-leaf pattern, and a nice claw mount was fitted. Really a beautiful gun...actually a little too beautiful for me. I want a plainer rifle, more of a working gun, something that I can hunt. I'd be pretty paraniod using this one.
I was assured that it was regulated and shot very small groups @100 yards. When I went to try the triggers, the gun closed on a pair of snap caps and then would not open. Hmmm...after disappearing into the rear of the shop for a bit, it reappeared none the worse for wear, and the problem was explained as "very tight chambers".
The shop is a very trustworthy one, so I haven't given up on this one yet, but it didn't come home with me. I'll have to sleep on it a bit. If I take the leap and buy it, I'll try and post some pictures.