Any BP that uses a 209 primer will get fouled up with carbon regardless of the powder used. Some primers create more foulng then others. Most who shoot T7 or Pyrodex do not have ignition problems even with a fouled plug because they ignite easily. BH209 is a whole new game. Western Powders just recently updated their website and shows proper BP maintenance. I have turned a few shooters onto BH209 by offering to let them try a few shots at the range. 1st thing I do is have them pull the BP and I decarbon it. This shows them what needs to be done to properly ignite BH209. I then show them how to seat the load hard on the powder.