I have 2 Rugers that I trust my own and my family's life to, a Super Blackhawk and a Bisley, both .44 mag, both cut down to 5" and parkerized. I prefer the Bisley due to grip shape, but already owned the SBH and can never sell it for what I have into it.
But I have to tell you all a story about Rugers. My buddy GI George bought a Super Redhawk and couldn't get it to shoot worth goobers. He brought it over and asked me to try it. I also had trouble getting better than a 6" pattern at 25 yds. Now I don't claim to be the best shot on the planet, or even the neighborhood, but I'm not that bad, and I know George is better. Also, the thing seemed to kick awfully hard for such a big heavy pistol shooting none to strenuous .44 loads.
I'm not sure what inspired George but he mounted the scope rings on the pistol and stuck a piece of 1" tubing I had in the rings. The pistol barrel noticeably headed off about 12 degrees to the left. He contacted Ruger and they said that was within specs. He then offered to begin taking it to gun shows with tube in scope mounts and factory letter stating this was within specs. They replaced the pistol.
I love my Rugers. I trust them with my life. But when you look at a used one, if the rear sight is adjusted all the way to the right, pass on it and look for a different one.