I'm new to bp shooting and had a couple of beginners questions. After having learned that 2 of my great-great-great-great-grandfathers served during the Civil War, I gained a strong interest in getting a bp revolver. To begin with I'm choosing a Pietta Colt Army Model 1860. Now what I'm wondering is what is the best powder for it would be. I'm trying to replicate the original loading of 30 grains of powder behind a 216 grain .454 conical. However, I know very little of modern black-powders or their substitutes, so I'm having trouble finding what would be the best for this load.