"pen pal' has already reported a PHFFFFT
I care about cleanliness as it relates to function, or "Why I don't use Bullseye or Unique in serious ammo".
I don't use any powder that offers the potential lack of reliability like these two....(although I know of someone running 5.5g Unique / 115g for sub-guns...."...in MY gun...", ay?)
IME Universal Clays, when used in handguns, is clearly cleaner than Unique.
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CLEAN (as it relates to function in MY guns, and maybe a few others ):
9x19 = 3N37, WAP
38 Special = HS6
357 Magnum = Universal Clays
40 S&W = Power Pistol
41 Magnum = Universal Clays
44 Magnum = Universal Clays
45 ACP = N350 (and W231; I've gone over 5K in my 1911 without a strip-clean)
45 Colt = Universal Clays