This is what I have found also. Using regular seating dies on a little boss press, if it doesn’t measure where it should sometimes I can bump it back through and get it right. If not they will be set aside with notation and redone with seating stem adjustments at end of loading session.Seating is like shoulder bumping in that you're best to sneak into what you want. Never assume it,, always measure every single one right there & then.