OK, Kurt, I will open that can.
But, before I begin, let me echo the other's comments. Nice shooting!
Four questions about fouling;
1. Do these powders exhibit vastly different fouling characteristics?
2. Are any of those characteristics sufficiently toilsome to cause one to avoid that powder?
3. Do the obnoxious (my term) powder(s) have benefits that cause them to stay in the game, in spite of the issues?
4. Is there any way to remedy, or lessen those bad characteristics?
OK, now that I've stirred the pot, what flux should be used?
Ed