ltwguns.com

I was shooting at a small town range (Seattle area), geez, must have been ten years ago, and a guy showed up with a couple of suitcases of custom revolvers. The guy was, I think, from Idaho (could have been Montana), and while some of the guns looked like prototypes, others were too "finished" to be mules. I'll describe what I saw, and if anyone recognizes what I'm describing, I'd like to know who the guy was, and is he a working gunsmith, or involved with a manufacturer?
The first gun was a stainless Ruger Single Six, converted to a 5-shot .357, by opening up the cylinder window, and fitting a custom cylinder.
The second was based on a Ruger Old Army, with a Hawkeye-style, pivoting breechblock installed, and chambered in .223.
Next were a couple of what looked like stretched Blackhawks, beautiful, high-polish blue (maybe originally in .357 Maximum?), five-shot, one in .444 Marlin, and the other in .45-70.
Another was again based on the Hawkeye, but with interchangeable barrels, Dan Wesson style, with an adustable extractor that automatically headspaced the barrels as they were screwed in. I think the guy had a half-dozen barrels, chambered in rifle calibers; .30-'06 is the one I remember.
Sound familiar?