Just like with smokeless powder in blackpowder, one size does not fit all.

Not only do different granualtions of black powder have different burn rates so do different brands of the same granualtion. Smaller granulations have a faster burn rate than larger grains. The type of charcoal used to make the powder will also affect the burn rate.

Just like with smokeless powder you need to try various powders and find which works best for your combination of components.

My CBC 480 grain .464 bullet prefers GOEX 1F and my RCBS 460 .468 bullet likes Swiss 1 1/2 real well.!

I make all my own lubes and don't bother with most of the commercial products. My favorite grease cookie is a paraffin soak felt wad and the fouling stays fairly soft.

I use a 20-1 lead alloy and bullet lube has been either 50/50 beeswax and crisco or paraffin and crisco. I don't get leading with either one.