RE: This BH209 suff.......
BH209 is the real deal. It is a good powder in MY rifles. The grains are all the same size, and you use a volume measure like any other powder. Easy to clean... yes, but it does make a mess with the breech plug grease.
If you have good luck with Black Powder, stick with it. I shoot black powder 90% of the time in my rifles... I don't mind the mess.