Lee, in about 50 years of using many dozens of Rugers in various models, I had one part break. It was the ejector rod housing screw on a NM Super Blackhawk that had been fired many many thousands of rounds. It broke 3/4 of the way through an IHMSA Silhouette match. We quickly red Loctited the whole works together while the targets were being re-set, and finished the match.
I also replaced several rear sights, because the aluminum sight had become worn due to numerous (thousands) of sight changes in matches and practice sessions. That wear, of course, doesn't qualify as breakage.
Implicit in your question is whether or not Rugers might be "better" than FAs. I have pretty broad experience with both. My opinion is that FAs are: Much more finely fitted and finished, USUALLY more accurate, and are factory chambered in some of the most powerful cartridges, equal to any revolver task.
However, Rugers are less expensive, USUALLY pretty accurate, and the .454 / .44 Magnums are all that most people will "need", and finally, since they are less finely fitted, they are probably less likely to "lock up" due to dirt, lubricant accumulation, etc. I'll grant that a "loose" gun can also let more dirt in, but I haven't yet locked up a Ruger. The Rugers are, however, much more likely to come from the factory needing some sort of attention.
Ya pays yer money and ya makes yer choice.... In my case, as I reflect on it, I last bought a Ruger sometime around the mid 90's. It's been FAs since then, but in my case, fine fitting, accuracy and hunting power for large game are important to me. I should also say that I haven't yet broken any FA part, although none of my FAs have been fired as much as some of my Rugers.
