" I would have liked a Single Six w/ birdshead grip and 3" bbl. They never made it. I'd take it in 32 H&R or 327 mag."
Yes they did--in .32 H&R quite recently with a Talo (?) special (limited) John Wayne edition. I believe birdshead 3.75". Close enough?
...Or, failing that, cut down one of the relatively common 4.62" birdshead .32s.
Glad to see the ol' megathread alive again!