Don't know the brand. However, if you cradle the gun in a rack so that the barrel is on the bottom and the stock is on the top, with the muzzle angled down somewhat( a few degrees from horizontal is all that is needed), you won't get any fluids, water, oil, etc. between the barrel and stock when cleaning.
I use a toothbrush and dish soap with water to clean the threads and the shoulders, of my nipples. A nipple wire run down through the nipple makes sure that the soap has cleaned out any carbon left there, and then assures me that no soap is clogging that small orifice. Use the toothbrush around the bolster, or drum where the nipple screws into the gun to work off the really cooked on BP residue around the lock and barrel. These areas, which are subject to both high pressure residue, and HEAT, often develop their own Patina, ( gray more than blue or brown)and you can either refinish the areas periodically, or let the patina stay to reflect your actual use of the gun. Just don't leave residue on the metal, or it will eat into the metal and leave serious rusting pits, which are not only unattractive, and reflect neglect, but may actually weaken these areas of a lock and barrel in time.