Well done, Don.
It will be good to try at 50yds., for sure. You are on the right path.
My .45GM bl., when using LeHighValley, slippery, like Mr. Flintlock's lube, did it's best at
50yards using 75gr. 3F GOEX, or 85gr. 2F GOEX with my standard 10oz denim, at .022" with a .445" ball.
I should mention it shot similarly with swaged .440" balls and might have been easier loading, I don't
know. I find .445" and .022" loads very easily, as-is.
The velocity for both of 75gr. 3F and 85gr. 2F loads was the same, just over 2,200fps. The POI and accuracy
was also the same, right around the 1/2" to 1" for 5 shots.
I found that when I switched to a water based lube, I could get the same accuracy & poi with a mere 65gr. 3F.