I'm noticing a considerable amount of pitting and little rust spots on the hammer of my Ruger Kodiak Backpacker .41 magnum and this seems like it's a fairly recent occurrence. I bought the gun brand new back in January of 2017 and I fired it on only occasion at a range. I should also add that I do carry it in a leather holster on a daily basis (I've never sweated on it either) and it stays in the holster in a drawer when I don't wear it. I suppose I might be making a big deal out of nothing, but I was always under the impression that stainless steel was supposed to resist corrosion exceptionally well. That and Ruger's ballyhooed reputation for building guns that were supposed to be so durable.
In any case, have a look at this photo and let me know what you think:
In any case, have a look at this photo and let me know what you think: