It seems to me that the further you get out there the larger the aiming error becomes. Even with a scope it gets harder to hold on a specific point as well as at shorter ranges. A fine crosshair helps you see the error better but it's still hard to hold on the point you want. Any slight movement will be amplified by the distance. This is one of the reasons I sight in at longer distances (100 yards or more) so I can fine tune the sight in for the load. If I can hit at that distance then closer will be fine. The amount of aiming error the distance imparts is added to the accuracy of the load and thus produces larger groups the further out shoot. A load that will shoot 1" at 100 yards should theoretically shoot a 2" group at 200 but most of the time it will be bigger, sometimes a lot bigger. The best group I've ever shot at 200 with a muzzleloader is a little under 3". I've shot several loads that are cappable of sub 1" groups at 100 that spread to 4" at 200. There are all kinds of things that can affect the group when you stretch the range, aiming error, wind, heart beat, etc. Practice is the best way to work on the one's you can control.