The off centered patch is the exact reason why I cut my patch at the muzzle. I have some pillow tick from Wal Mart. Tear a strip of that off. Lube that strip up with what ever. Then lay that over the muzzle. Seat the ball and cut the strip away with a knife or anything else you might have. There you are, perfectly centered patch every time.

Some Renegades are powder junkies. You might want to kick the powder charge up more. I shoot them with 90-100 grains of Goex 2f or Pyrodex RS.

Keep trying.. it is a lot different then shooting sabots..