Hi everybody. I have a question I've always wanted to ask. When you touch a blued firearm, how long does it take for rust to develop? When the bluing is touched, do you absolutely have to oil that spot that night? I use a blued gun for hunting and sometimes I touch the bluing and end up oiling it to be safe but my dad insists it really isn't necessary to constantly oil it even when you touch it. Is this true?