RE: let them all rust
I checked the blade today and it really has not gotten worse for the most part. I think I know how to speed the process up, but the question would be how fair is that. I would put it in the garage. While still dry, it gets much more humid in there and I think that would set this stuff working faster.
I had a rifle in the workshop over night and took it out this morning and shot it. There was a finger cot over the end of the barrel I forgot to remove last night. You could not believe the rusting that took place under that finger cot. Needless to say I wiped it all off right away, but this blade sat out there for over a week with little or no change and that barrel changed over night.
Perhaps I need to get an old barrel and repeat all this experiment again. For my own knowledge.