Differences between Humbrol 113 and Model Master 1785 (Rust)?..

I’ve read somewhere that the Humbrol 113 can be used as red oxide primer for WWII German armor… Well, It seems that I can’t found that color in my LHSs (and ordering flammable products online should be a little difficult), but I could find the Model Master 1785 Rust… Are the these colors a close match ir not? If not, what color must I add to the Model Master color to make it a closer match to the Humbrol color? Thanks a lot in advance. Most regards and Happy Holydays.

José

Humbrols shade of rust is lighter and more orange than Model Master’s shade. From what I have read, Tamiya’s Hull Red is supposed to be a good match for German Primer Red Oxide.