Have had excellent results with the shake and bake method of powder coating for short fat pistol boolits.
The long skinny rifle ones don't turn out as well with a single application. Two applications solves the problem but if they are the same color, it's tough to gauge the coverage.
As an experiment, I tried two coats with different colors (red followed by yellow). that made it easy to judge coverage and produced a unique appearance.
These are 285 gr .375s that I'll shoot w/o gas checks using light loads in my Ruger No. 1 Tropical in 375 H&H. (Not a rifle to shoot w.full house loads !)