The claim for the over powder wad or use of grease over the ball, is to prevent a chain fire. The grease is good because it lubes the bore a bit. As for the chain fire, I have thankfully never experienced it. I believe such an accident would occur, not from the front of the cylinder(its a tight lead seal) but rather from a cap adjacent to the fired cylinder falling off and lighting that cylnder along with the one the hammer hits. I can't stress enough the use of a proper fitting ball, I once had a .36 cal misfire and the pressure from the cap pushed the loose(my bad) ball into the forcing cone. I don't know why I didn't cock and fire another round, but my guardian angel was looking out for dummys that day and I took the pistol apart and found the ball in the barrel. Make sure your caps are tight and your head is screwed on right as with all firearms.