Originally Posted by jeansandtshirt
Yes, many things are made out of steel, that can be marked and scratched. Cars are made out of steel...they don't get all marked and dinged up now, do they?
Anything can be scratched by a ring, not just blueing on a 1911. How about a vintage sports car? Think a wooden steering wheel will not get all marked up by a ring? Go to a Perazzi dealer and make sure you run your ring up the side of it, and see what happens.
I know bupkis about handguns and their finishes, so I'm sure you're right. But with a car (leaving the wooden steering wheel example aside), I think most minor scrapes are really to the paint, not the underlying metal. I've certainly had my hands on the outside of my car many times in the 5+ years I've owned my car (washing, fueling, etc.) and don't believe I've ever scratched it with my ring. Obviously, it would depend on the ring, though. Mine's a pretty smooth, rounded white gold ring that doesn't really present an sharp edges from my finger. A more angular ring or one with gemstones, obviously, could be more problematic.
But yeah, I agree that theoretically even my ring could leave marks on a variety of stuff. All I can tell you is that in 10+ years it's never happened that I'm aware of, so it's more of a theoretical issue than an actual.