So i've been reading some posts about seating a bullets so that it is "X" distance into the lands. And i'm trying to wrap my head around this. The lands being part of the "immovable" steel barrel. The bullet, while having an interference grip with the neck, is still the movable part. You already proved this by seating the bullet into the casing past this interference. Wouldn't it then be that it was loaded slightly long, and the lands finished seating it, making sure of a contact with the lands?