John,
Those are great groups. One note on the vertical, though - just touching the lands is probably the worst place you can be. With a little variation in bullet dimensions (there's more of that than you think in any box, just measure a few), and you're slight jam on some and off lands on others. You might try loading them 5 thousands shorter and see if it takes the vertical out of your groups. My guess is that's what's causing the few flyers too. My rule is either jammed or not jammed, but nothing "just touching".....


If you do try jamming them, back off on the charge and work up to max again just to be safe.
Elkbane