I have a EAA Wittnes 40 cal that I was having a hell of a time with leading. I have been using Penn 165 match grade bullets. The load I found with the least leading was with AA#5. I decided to have the barrel slugged to make sure my bullets were sized right. The smith told me the inside of the barrel had scratches all the way down it going across the rifling. It looks like someone screwed a bolt down the barrel just a hair bigger in diamiter. This is most likely causing my leading issues. The gun shoots great (with jacketed bullets) and I know it doesn't have a match grade barrel, what would you expect for under 500. Does anyone know if there is a product like Tubbs Final Finish for handguns. Thanks much for any advise