Settled on 54.5gr of H4350.
10 shot string averaged 2649.9fps with a SD of 12.
Seated the bullet .009 deeper and the groups (5 shot) shrank to .838" at 100 yards.
The .009 number comes from my Forster dies. It is awful nice that they give the stem 1/8 turn, 1/4 turn and full turn measurements with the dies.
That'll do donkey. That'll do.
