As I sit here working up 32 SWL loads for my 16-4 I keep thinking about your project. I very recently got a 617-6 in 6" (10 shot cylinder). I'm thinking I would only have to buy the cylinder, then "just" the custom work on it all. Hmmmm, can I scratch out enough from my Social Security checks to do this project.
First, let me announce publicly that Project 616 is complete and in hand!




Having just been through the entire build-out project, I would make the following suggestions.;
1) Start with a Model 66 as your donor gun (if you want to go stainless.) This will give you the best start on a platform requiring the least change (and change=$$$) H Richard, you'll come out ahead (IMHO) by selling the 10-shooter rather than going to the expense of converting from rimfire to centerfire and 10 shot to 6 shot.
2) Buy a barrel and cylinder as separate items. Since it will be rebored, the barrel considerations are pretty obvious... what length do you want? On the cylinder, of course you have to start with 6 holes in it, but in addition, try to find one with the old style (round) extractor. I mistakenly grabbed a later cylinder with the rectangular extractor and caused Andy some extra work which translated to extra ¢o$t for me.
I'm at the kitchen table of Casa53 where Dale and I are planning out our day. I will shoot it today as soon as the temps warm up a little and will post range results and pictures (by Dale, of course) when we get in this evening. The more I look at it, the better I like it. The 4" under lug barrel on a stainless K-frame looks very businesslike. As expected, Andy's work was flawless, and although I presented him with a couple of "extra challenges" with the cylinder's configuration, he handled them in an impeccable manner. I may change out the factory (white outline) sights when I get home for a NOS Austin Behlert unit I've been saving for a special occasion, and I'm conflicted on the grips between my tried and true smooth finger groove combats that have been on the 66 for 20 years and the Fitz-style Rosewood Targets that Schofieldkid81 made for me. The combats will stay on it for now, though, as they are here and the targets are at home.
All for now... watch for range report with pix late this afternoon!
Froggie
PS YMMV, but I found it easier and less expensive to find all of the parts and then refer it as a package to the 'smith. However, if I
were to do another and if I happened to get the barrel first, I
would get that into the queue for reboring as that was my longest wait.