Pietta's from Cabela's come with two pamphlets. One from Pietta and one from Cabela's. Without digging one out to check I believe the Pietta pamphlet says 15 grains of bp for a .44 and Cabela's says 30 grains for a .44
it's all for the lawyers. Fact is you cannot overload a steel frame bp revolver with bp or Pyrodex.