i have used .50 and .54 caliber patched round balls to kill deer and hogs. No animal i ever shot with patched round ball ever got away wounded. Ditto for other hunters i know who use patched round ball.
If you don't like patched round ball, simply don't use patched round ball. Don't jump on a muzzleloader forums and preach against the use of patched round ball.
The muzzleloader community has this "expert" named Toby Bridges who went on a crusade against the use of patched round ball on game animals. Years ago Byronic hero type Toby Bridges tried to get the states to outlaw the use of patched round balls based on a flawed requirement of a minimum foot pounds of energy. Toby got dropped by two sponsors for his rants.