I bought a case of Graf's & Sons black powder a month or so ago, half 2f and the other 3f. I have been shooting it in about everything I can load. So far I am kind of impressed with the powder. It seems to be as strong as Goex. It is made by Wano I was told. It is cheaper. Ignition is excellent. It does fowl a little more, so if a stronger powder charge is not needed, use the smaller charge. More powder is more fowling. It does clean up easy enough. But of you're shooting 100 grains of Goex, then load the same in Graf's and you should be the same down range. Of course check it yourself.