Christopher, I have a Blackhawk convertible in .45. With the .45 acp, which gets used mostly on a 25 yard indoor range, it will easily shoot 2" or so groups, off hand. It would probably cut that in half, if I used some sort of rest.
The .45 colt gets used at an old rock quarry I have access to. I can't really give you any group sizes, because the targets are usually rocks and such. Most shots are anywhere from 50 to 200 yards. With my loads, any longer distance and I have to hold over the target so much, it isn't really target shooting but more like "chunkin' lead in the gereral direction". Tons of fun!!!
Good luck with decision... Joe
------------------
Go NRA