On my benchrest barrel 308 Cal. , Right after I'm finished shooting I use a brushless cleaner at the bench Wipe Out - Patch Out until the patch comes out clean but when I get home I run a wet patch with #9 Hoppe's bore solvent an the patch comes out brown . Carbon is still in the barrel. Wet with #9 again an tight dry patch does the trick. Barrel is squeaky clean . KG - 1 is also very good for carbon but still. not as good as the old faithful #9. I use #9 for my 22lr CZ 452 but finish with Ballistol . Works great for 22 but when used in my 308 an dry patch the barrel to remove any Ballistol it takes at least 4 foul shots , that stuff is so slick , I stopped using it in my 308 unless I flush it out with #9 . Great for 1911's though.