you need a harder bullet,lube is for lubing the rifling,use the blue lube,not rooster red. also, think of me being crazy, but when i shot lead,i used to plug up one end of the barrel, put some orange juice in it,and plug the other end. leave it overnight,you would not beleive the crap that will come out. it will not hurt anything because orange juice is a mild acid. and then all my stainless pistols would go in the dishwasher,with two scoops of tang,come out bright and clean.the wife stopped me from doing it
really made dish washer dirty.