VFG for the win !I use nylon brushes but mostly VFG felt wads. Have used bronze brushes in past. One thing you might want to try is when you finish running the brush and rod on this cycle to flush/spray the brush with denatured alcohol,or carb cleaner) to remove all bore cleaner. Also wipe down the rod. Doesn't matter if you are using a Dewey, BoreTech, carbon fiber, nylon or bronze ... it just makes sense and actually makes the brushes last longer. I usually spray the brush over some waster paper towels in the trash and this way I can see just how dirty,OR Not) the bore was on that pass.