Man, I like to think there are some accuracy improvements, but I can't prove any with target pictures. I have a couple rifles that had pretty steady POI shift from dead clean to fouled that closed up 25-maybe 50%, I have a couple that it didn't help the shift on also. It seems that rifles with good barrels I see less POI shift from clean and cold to cold and fouled, rifles that shoot well all the time, the shift is still there it's just less. I think there are some accuracy improvements but the easier cleaning and good storage characteristics are what I would hang my hat on.