I just like to try to harvest deer with one of every type of gun and preojectiles I have, hence the round balls. I also had good smoothbore accuracy in my H & R using a 0.690 ball, wrapped in a heavy denim greased patch, followed by a 1/2 felt wad. The felt wad was screwed to the back of the ball with a drywall screw, sandwiching the patch between the ball and wad. So the unit flew like a badminton birdie. Pretty good accuracy at 50 yards for a smootbore, better than plain patched ball. I suppose the energy dropped off fairly quickly, but man what a job it did on a deer at 40 yards.