Bore brush and Birchwood Casey "2 In 1" Bore Scrubber is the next step-up from the regular Birchwood Casey Bore Scrubber. Controls everything in your bore. Shooters Solvent and Butch's Bore Shine (not the blackpowder bore shine) also work pretty well. I have so much old-school solvents layingaround -- it'll be a couple more years before I test any foam gel solvents.