Best Rust Blue Formula For non-collector Luger refinishing?

[The Virginian]

I have a very good shooter Luger that is a completely worn mix master non-matching gun with a frosty, but accurate bore that I would like to refinish. I have Brownell's Classic Rust blue formula on hand and Art's Belgian Blue as well as Nitre bluing salts to do the safety and other parts that need to be strawed. I am leaning towards the Classic Rust Blue formula since it has a more blue black color whereas the Belgian Blue is more black purple. Any advice is appreciated. Thanks.