Finding Clean Shot pellets might be hard to do. They are now American Pioneer Powder Company and they do not make pellets, they make sticks. They got into a problem with Pyrodex from what I heard and changed their name and from pellet to sticks....

After checking Mr..45-70 's link I might be mistaken. If you can not find Clean Shot I would look into American Pioneer Powder APP or the new stuff on the market called Black Mag 3. I have not had a chance to try it yet because I have not found it locally, but have read some good posts about it.....