“That’s one way to unload a muzzloader!”
So what’s wrong with having a real gun?
Muzzleloaders are harder to use. You get extra challenge this way, and give the deer a chance. (There isn't much of a chance with .30-06 at 50 yards.)
You can also have an extra week or two of hunting if you use a muzzleloader. Bow hunters get even more time.