For years I lived next to a muzzleloader/shotgun only zone in Montana (there aren't many of them) and killed up to 5 whitetails a year with a .54 cal Lyman Plains rifle cap gun. It was generally <40 yard proposition. I'd just sit with my back to a big 'ol cottonwood in the afternoon and wait for deer to start moving closer to dark. Iron sights, round ball, eat right up to the hole! Nothing complicated about it... it just takes time, and some days not even much of that!
