Stainless steel WILL rust. It is a lot more resistant to rust than carbon steel, but it isn't rust proof. Some stainless alloys handle moisture a lot better than others because they were engineered to be used in wet environments.
Some stainless alloys are chosen because of ease in machining without regards to actual corrosion resistance, because they are not meant for under water use. I kinda think revolvers might fall into that category
Some stainless alloys are chosen because of ease in machining without regards to actual corrosion resistance, because they are not meant for under water use. I kinda think revolvers might fall into that category