Yes and I'm sure he'll get 10 million different answers to his question. I use hot water, brass bristle brush and a few drops of ballistol. Their general purpose Sportsman gun oil does the trick it gets allot of the junk out of there especially in the nipple area leading into the breech. The first time I used it I couldn't believe how much junk it got out of the nipple area. Globs of brownish black junk just came right out when I capped off the musket. I would definitely recommend picking up a can of Ballistol from Midway USA. The stuff works great, it by far one of the best black powder solvents I have ever used.Everybody has their own preference.