250 Thor
Pyrodex Select
90 - 1784
100 - 1858
120 - 2031
150 - 2148

So I am in the 1860's most likely at the muzzle with 105gr pyrodex.

My point being, this 250gr thor expanded to just under 1" diameter after it hit a buck at 175 yards.

By some theory, this bullet should have lost its energy at that yardage and penciled through.