"....use the 250-grain Partition-HG in an inline muzzleloader capable of handling three 50-grain Pyrodex Pellets. Some time back I tried that combination, and it averaged just over 2100 fps for 2475 ft-lbs of energy at the muzzle".
A pointed nose 250 gr bullet (enclosed in a sabot) at 2100 fps vs a round nosed 30/30 170 gr bullet at 2200 fps, my guess is the maximum range would be about the same. I looked at a box of 30/30 rounds, but a maximum range warning was not printed on the box.
A few years ago I did see on a box of 140 gr 7mm Remington Magnum rounds a warning of a maximum range of 3 1/2 miles.
50 years ago the 22 Long Rifle rimfire warned of a maximum range of 1 mile. Today 22 Long Rifle boxes say: Dangerous to 1 1/2 miles.
Perhaps someone knows or has seen accurate information as to the maximum range of a modern muzzle loader, I have not.
See post 122