Thanks for the info, y'all.
I've thought about the Single-Six, but I'd rather not have that much weight invested in a .22lr for plinkin' and woodsbummin'. And I'm not a big fan of adjustable sights....when I find a load I like, I break out the file & never have to worry about losing zero. And I've known a few guys who have taken a spare Bearcat cylinder and had it reamed out for .22Mag...never had any problems shooting it. It's on my to-do list, too....
I've owned a Heritage, and it was a great gun. Never got used to the "safety" that I never used. And I did handle a 4" birdshead-gripped one yesterday that was very tempting.....