Shot an email off to the Cody museum people about ten days ago, but no reply. It used to be that the NRA would look at things like this, but will they still? NRA today isn't like it was when I were a sprout. I did ask Harry Eales, but he came up dry, too.
I was wrong about the chamber length. When I came to actually making a case to fit it it, turns out that the maximum case is .790 long, not .900 as I had measured with a caliper that must not have been zeroed
That lets the old American .38 Short CF back into the running, I think.
Bought a little electric kiln with a PID controller for heat treating, an acquisition that I've put off for years. First job was tempering a mainspring that I filed up out of some stock from Brownells. Success first try, which was gratifying. No more guesswork on temperatures.
Squeezed the link in a vise to bring the holes closer together, so it now locks up tightly. So with the mainspring installed, it can be function-fired. Or could be if I had any .375 heeled bullets. Maybe I can breech-seat a round ball?
Phil