Pretty much all powders will run clean when they're loaded properly (except maybe Bullseye ;-).
SHR970 said:So the question about dirty is...Soot / reside left behind externally that is easy / hard to remove vs. that AND barrel fouling?
After a while I DID try to find cleaner burning powder but gave it up fairly quickly when I couldn't get the accuracy of good ol' Bullseye.
I thought Red Dot was just as dirty as Bullseye