After shooting nothing but black powder loads for SASS since I started, I got lazy and tried a batch of heathen smokeless loads using Trail Boss powder and Laser Cast bullets. Know what happened? My times improved by about 10 or 15 seconds per stage, and my misses went way down. My last two matches were so close to being "clean," it almost hurt to see the first puff of dust from a miss. It's been happenning along about stage 5. Plus, the skin doesn't get burned off my fingers during long shotgun strings on hot days.
I'll be going back to Goex in the fall, when pouring rains wash the fouling away, and keep my shotgun barrels cool, but the pull of the "non-dark" side certainly has it's appeal. This could get to be a summer time habit, even if I don't win my "you're the only guy shooting this category" ribbons.