A few months ago I became the owner once again of my very first shotgun. A Stevens model 311 H. The gun is in good shape but the previous owner allowed the barrel to develop a few surface rust spots. I am able to rub most of it off with a microfiber towel and gun cleaner but it is bare metal underneath. I do not want to re-blue the whole gun or coat it in anything like cerakote. I want to stop the rust and retain the original finish since its very small spots. The biggest one is about 4mm in diameter and there is only one of those. There are 3 others that about a millimeter in diameter. My first though is a copper chore boy to remove the rust and a "blueing pen" to spot blue it. My worry is that the result in a poor fix. Again, I really just want to stop the rust.