Stubblejumper and B.C.: I'm not sure why you are having fouling trouble with the Scirocco and I'm not. I use primarily Shooter's Choice for cleaning. Don't resort to the Sweet's unless I have to - and I don't have to with the Scirocco. Did your gunsmith cut these chambers with a solid pilot chamber reamer? Many times the solid pilot scuffs the rifling just ahead of the throat, and this winds up atomizing copper as the bullet starts its path down the barrel. The floating pilot reamers don't do this . . . .