I did a bit more testing and loaded up to 42.5 grains of H4350. Here's the data, better but still not what I'm looking for:
AVG = 2,619
ES = 22
SD = 8.0
This was a 10 shot string fired as two 5 shot groups, both measuring around 0.625" @ 100 yards. Most of the cases looked good, but one had a...