MPro-7 beats all other cleaners, hands down!
You can clean with Hoppe's, Otis, Breakfree, Birchwood Casey, et al, THEN do it again with MPro-7 and you will still get more lead out. I still like Sweet's 7.62 to get the copper out. To find out more go to MPro-7.com or google it. You'll see the difference.