I can't help much but I'll share my experiences with the 142gr Accubond LR. I started with about .20 off the lands but ended up at about .65 off the lands. Accuracy wasn't near as good as other bullets like the 143gr ELD-X, 140gr Ballistic Tip, or the 130gr Sierra Gamechanger.
Another thing I noticed is that using the same powder with the 142gr ABLR as I did with the 143gr ELD-X I got less speed with the 142.
I ended up getting the best accuracy and similar speeds with the 142gr ABLR using Hunter and I arrived there after trying IMR 4350, IMR 4831, StaBall6.5, Reloder 23, and finally Hunter.
The velocity with StaBall6.5 and IMR 4350 were slow compared to other loads I had developed