Range day this afternoon.
41 grains Varget at 2.276" (.03" off the lands) was again the winner. Not quite as good as the first time, but I'm not the best shot off a bench. Plus, I had "third shot jitters."
I tried 5 different seating depths with 42.2 grains Varget, and two OAL look promising. The good news, they were sequential, so if I play around between them I might get lucky.
Not quite the tight triangles I was looking for, but it's progress. I'm hoping for sub .75" accuracy at 2800 fps.
P