I think I'll join the rant..................................
I have used Bullseye for years and years. Started with it, made one hole groups with it over and over and over again. Guess what else I bought a long time ago? Even before I started handloading! A CLEANING KIT! I've used it ever since I got it too!
All joking aside, there are clean and dirty powders. Dirty powders usually show up when they are attempted to be downloaded. Dirty = unburnt powder. Any of the "Magnum" handgun powders get like that when used at the bottom of their respective data, period.
Unique is one of them that HATES too light of loads. If you want smoke and soot and nasties all over your firearm, just load it at the bottom of the newest data you can find.
I shot plates against a guy once that used Unique and 158gr LRNFP bullets and kicked my rump. I said: "Ain't it hard shooting through all that smoke using Unique for your powder?" He said: "Let me tell you a secret. If I load any less in the case than what I do, I get all the stuff others talk about. I use what I use and have none of that!"
The load he used is within most specs but some manuals have listed it in the +P area so I am hesitant to post it.
At any rate, the point of my post is simply this, use the powder for the intent that it was designed. There is no "one size fits all" and few "one size fits most" but each discipline/preference can have a solution. I handload 'cause I like to find that spot!
So, dirty powders? Yes, especially if they are used incorrectly. Clean powders? Yes, the same ones (most times) used correctly.
p.s. When an explosion (read fast burning situation) goes off in your cartridge there is going to be soot to some extent, especially if you use a lead bullet and it's lubed, so get a cleaning kit to take care of it!
