The 0.323" sizing die goes all the way to the rim of the reformed case. The solid part of the head goes fully into the sizer. I am starting with 0.335" OD cases and getting down to 0.328" (maximum) to 0.330" (more common), so it is going down only about 0.005" after springback. I don't know where the extra brass is going, but it is not going into the primer pocket. As for another intermediate sizer, I am all for it, but I would have to have one custom made by someone. There is nothing between 0.314" and 0.323" in Lee.