Does anyone have any experience using Pyrodex RS powder. I have been reading a black powder manual and it said 56gr. Will occupy the same space in a powder measure as 70gr. Black Powder and will give you basically the same results. Also another muzzle loading book I have been using said it is harder to ignite and suggested that you put 5 grains of black powder down the muzzle first and then the pyrodex, said that will help it ignite better.