Reason for asking this is because I did not think people would jam up in the lands as this increases pressure more. And assuming ammunition is more accurate with almost full case or in the upper velocity range and this is where we attempt to find accurate loads, jamming into the lands will increase pressure even more.
I load starting at .020 off the lands and I am thinking maybe I can start at .010 off the lands as I think more ammunition is going to be accurate the closer the bullet is to the lands. As one writer puts it "the time a bullet wandering into the lands can arrive there slightly off which makes it less accurate" but of course each rifle has a distinct preference.
