Seen a couple guys shooting their muzzle loaders with regular patched balls as normal. Except that they folded up a piece of cloth about 2" square and put in down the barrel on top of the powder before they rammed down the patched ball. When I asked about it they said it was good for accuracy. Has anyone every heard of this or done it to improve accuracy? By the way, these fellows were shooting Kentucky type rifles and were shooting OK.