Ned,
I am satisfied with THIS Bisley. But I have to admit that David Clements did some things to improve on it. I never fired a round through it before it went to him because I bought it as a poor beaten up gun. It had no rear sight and a cobbled up front sight when I bought it. I knew when I bought it what I would be doing to it so it did not matter. In fact it could have been a heck of a shooter for all I know. I shot a couple of 1 inch groups with this gun a couple of weeks ago at 25 yards. Yesterday I shot some 2 inchers at the same distance trying some different loads. Good enough for hunting yes, target shooting... probally not.
As far as Bisleys go they are nothing more than a Blackhawk or Vaquero with a different grip frame, hammer, trigger, grips and a couple of different screws. The real benefit the Bisley, over a Blackhawk or Vaquero, is the grip frame and the hammer. The grip frame is bigger which helps if you have bigger hands (I do) and if you are shooting hotter loads it disapates recoil better. The hammer spur is lower and if you shoot off hand it can help in cocking the gun. A lot of people like the Bisley hammer on their plow handle guns because it is easier to reach.
If it were me and I wanted a super accurate revolver, I would look at a Freedom Arms. The are line bored and have a reputation as being some of the most accurate guns available. The cylinders are line bored and because of that the cylinder lines up with the bore of the barrel better. You can get a Ruger built that way but it costs big bucks and the wait is longer. Most of the big name smiths take 8 months to nearly two years at this time. Many charge $1000+ and you have the cost of the gun on top of that. You can get a Freedom Arms revolver for that kind of money.
I like my Rugers because they are tough. No they are not built like a Freedom Arms but I currently have 13 of them in my safe. For what I have into them, I could only afford about 3-4 Freedom Arms (not that I don't want one).
FWIW,
Jay