Refinishing a Savage 24 that went through Katrina and was given to me after the owner heard the gunsmith's repair bill. I have sanded all pits out and polished metal. Now I need to know what coating to use. KG, Durabake, or Duracoat. I have no experience with do it yourself metal finishing so could you tell me which is best and why? I want to use black if that matters.