31ºF, overcast, no wind, 50yds, .50cal hornady prb, 10 shots
few changes:
2 swabs of spit patch between shots -> 2 swabs dry patch between shots
60gr pyrodex rs -> 70gr pyrodex
.015 t/c pre-lubed patch -> .018 t/c pre-lubed patch
the 3 shots down in the 3rd quadrant (thats about 8 o'clock for you non-geometry types) - were the original routine before the changes, after the changes the groups tightened up.
the 10th shot (2nd quadrant, 11 o'clock) was because the 1st trigger was not setting the hair trigger. i heard it click twice but had to pull harder on the hair trigger making me miss the bull - that's when i quit (i didn't have a small enough screwdriver to adjust the set screw).
oh yeah, happened again - i forgot the powder charge! i'm getting good at popping it out with the 'powdered nipple' trick.