My experience is that they do not like much powder. 60 grains of 2F black is what gave the best results for me in a zouave. If the skirt is not perfect it won't shoot strait if the skirt is expanded to much so it rubs the wall to hard it will not shoot strait and will lead the barrel.Do not expect the kind of accuracy that can be obtained with sabots by the best shooters. try 50,55 60 and 65 grains of Black or Pyrodex RS.