I have killed 7 whitetails and 6 wild hogs with the patched round ball. I shoot a TC Hawken and a Tennessee Mountain Rifle, which I built.
In both cases I use a .490 round ball and 80 grains of powder.
None of those animals got 50 yards. In all cases, a lung shot, which was a complete pass through.
The round ball is a more effective killer on a lung shot than a 30-06.