Most if not all of my chambers are "short throated" so I "start off" jammed into the lands when I work up loads.
I have had a couple of long throated 6BR chambers that I couldn't reach the lands with lighter bullets so I just seated the bullets in the case neck to where I thought they looked good. Was "really" surprised at the accuracy. And I didn't have to worry about pulled bullets and powder in the action if I had to unload a loaded round.