Commenting about the cleanliness or uncleanliness of a powder without mentioning the accuracy obtained with said powder, shows you are nothing more than a neat freak who just happens to like to shoot. I'll take a dirty burning powder that give me excellent accuracy over a clean burning powder that exhibits so-so accuracy any day. Just MHO.
Don
Agreed. I've shot groups at 100 yds with a revolver that were just a tad over MOA, and I was burning Unique.
I've used Unique in 9mm, 38 sp, 357 mag, 44 mag, 45 acp, 45 colt and 480 Ruger and used with an appropriate weight bullet and an appropriate charge accuracy has been as good as or better than any other powder.
I've also used it for cast bullet loads in the .308, 35 whelen and 500 Jeffery.
As my boss once said when being asked about cleaning guns, "I don't mind cleaning guns, cleaning guns means I've shot them, and I like shooting guns."