I know several folk making the 45 Schofield a success with genuine BP, using Schofield brass and 200 gr Big-Lube bullet.
I recommend an "organic" lube both on the bullet and base pin of any revolver fired with BP. Same for cleanup, use an organic product (water is easy to find and fairly cheap). Save all the modern synthetic products / lingo and the word "carbon" for the smokeless crowd.
If someone made a Smith #3 SA chambered properly (44 Russian), I'd give it a whirl myself.
Regards,
Slim