[The Virginian]

Polishing correctly, with the proper grit and not changing angles, rounding off edges or going too deeply is the first step to a good rust blue. Cleanliness and the proper chemicals and techniques will also be critical. Practice on scrap, spare or broken parts to master the technique before trying it on the gun. Herter's Rust Blue from Brownells or Midway is a good one to use. Make sure you use distilled water to boil the parts in the rust blue process.