RE: sighting in new muzzleloader
I think your numbers might be a little off. Also it would help to know what kind of bullet you're shooting and how fast the bullet is moving. A large heavy conical for instance will drop much more then a 200 grain XTP with a large load behind it.
The best way to learn your rifle is to shoot your rifle at the differnt distances. While a balistics chart is all fine and good and are actually very close to real experience, nothing can beat putting in the range time and seeing what really happens in the real world...