Take the die apart, and you'll have your answer.
I did. I changed the seating stem to a VLD seating stem. Whatís the easy answer? You didnít teach me that in class.
From what I've seen the easy answer is, the stem engages about 1/8"+ below the meplate. But I'm not going on record as saying ALL of them engage that way. Though I've not seen different with Hornady, RCBS, and Redding.