As planned, shot the 465 grain/.451 Lead Flat Nose bullets at 75, 100, and 125 yards today.
The load was 85 grains GOEX FFFg.
Here are the results.
75 Yards
100 Yards

(
DISCLAIMER: That low shot was shot #4, and I knew the crosshairs were a bit below the bull when I touched it off but couldn't stop the trigger squeeze.)
125 Yards
Happiness is a 2-3/8" five-shot group at 125 yards with slip fit heavy lead in a sidelock.
TRAJECTORY: 2" high at 75 yds. = 2" low at 100 yards = 4" low at 125 yards.
DO I DARE TRY 95 GRAINS?