First off Knight Solvent Concentrate 4oz bottle MFG #901250 is a non petroleum product designed for black powder weapons. It can be safely diluted with water, throw a few drops in a clean coffee cup and pour in hot tap water and its a slightly greasy version of dial soft soap.
I love this product, skip the pre soaked patches, cheaper to get the liquid in a sqeeze bottle. For using i merely pull my inline apart and put a nylon bore brush on, dampen a patch with the solvent and run it downt the barrel, when it comes out i turn the just used patch over and reuse the clean side of it. Normally only takes me 7 patches to get the crud out. Oddly enough it kinda changes consistency when its used on pyrodex. 8 patches normally gives my barrel a true mirror polish.
I follow up with knight oil MFG #901210 with dupont teflon and "slick 50" in the whole caboodle. It works REAL good inside the barrel, but on the outside it allows for fine surface rust in spots.
And right now my oil is doing somethign to the plastic bottle. its turnign part of the bottom white, and has some large white flakes. anyoen else have that happen?