I have always understood that the conventional way to load wadcutters (148 gr.) is to seat the bullet even with the case mouth, then finish with a slight crimp. Yet the loading manuals typically show the bullet seated with a bit of the bullet exposed, maybe .10" or so.
I am never comfortable seating a bullet deeper than loading manuals recommend, yet seating even with the case mouth makes sense to me.
Your opinions welcome.
Paul