Well actually when you load a smoothbore rifle, you put the powder down the barrel, then a over the shot card, then a fiber wad (cork looking) then the ball patched or unpatched, and if it is unpatched, then you put an over the shot card on all that to hold it all together. So in this case you are basically placing an "obstruction of sorts" over the ball and I've shot hundred of them that way.

I have often wondered the same thing Triple Se7en posted and if it would work. I do nto think I will try it mind you, but wondered what would happen.