and here it is

https://www.youtube.com/watch?v=RO5WsXP_Kns

http://ultimatefirearms.com/modelsprices.php

kills documented up to 600 yards

Quote
Originally posted by Steiny:
.... 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.
...