I like this comment .... "Muzzleloaders have evolved to the point that with smokeless powder (which is legal to use), they are essentially a high-powered rifle (accurate 500 yard gun).
B.S. I'd like to see one of these accurate 500 yard muzzleloaders? Might be the rare true gun nut that has built something like this, but by and large 200 yards is pushing the accuracy limits of most modern muzzle loaders.
Heck .... 500 yards is one heck of a shot for a very experienced marksman with a scoped 300 mag off a bench.