I recently bought a can of DuPont FFFG blackpowder from another club member. The can and label appear to be old, which is really why I bought it from him. The powder contained in it may or may not have been original or actually made by DuPont. I used the powder recently at the range, and it performed very well: instant ignition, etc., but I noticed that after about 4 shots with a "spit patch" and round ball, the fouling in the bore was making reloading difficult. Before using this powder, I have been using a container of Goex FFFG, and I can actually do 9-10 shots without wiping the bore. Here's my question: What has been the experience of forum members regarding different brands of blackpowder and the fouling they produce? Have youse guys noticed a big difference between brands? Come to think of it, the DuPont powder seems to match the fouling of most other brands I've used, and the Goex may be the standout. What say ye?