I have tried CFE Pistol and CFE223. I used CFE Pistol on 9mm, 38spl, 44spl, and 45 auto. Both CFE powders are on the somewhat dirty side in my experience. They do seem to reduce copper fouling as advertised. However in the process they seem to create more fouling. Although the extra fouling seems to clean out easier than regular fouling, so maybe its a different kind of fouling. But that is just my subjective opinion having used 2 of the FCE powders.I thought CFE was suppose to be this miracle Clean burning powder?