Ok a few years ago I sold my belt filling machine only because I needed the cash. I got my Linkers out today and noticed they both 30-06 and 308 had some rust, not alot on one but the other one has quiet a bit. It dont look like any pitting yet. I got these about 20 years ago with my DLO 1919 from Kent Lomont so they are older and look like cast. What is the best way to remove the rust ? Also what to apply to prevent rust in the future.