I have seen on this forum and heard from others that unique is dirty and some of those folks wont use it. I have been using unique for around 30 years (since I was 15) and while it does leave a little grit behind in the barrel I have never seen a loss of accuracy or accelerated wear from using this powder except after extreme shooting. ie; 1500 rounds in one day without cleaning (actualy did this once just to see if I could)
even then a few swabs and good to go. so umm what is the issue? I use more unique than any other powder. not trying to start a frakus just wondering what the definition of a dirty powder acctually is.