I'm up to 55.5 grs. of Rel. 19 with a 139 gr. hornady, .008 off the lands and it seems the closer to the lands it get's, the better it shoots.
It shoots the Rem. green box at about 1.25" at !00yds. It shoots the first 2 within .25" of each other and the next 2 do the same thing about 1" lower. I really like mine,and when I get it sorted out I'll chrono the loads.Digger