I have some at home so I'll check at lunch. Its a pretty deep stem so I doubt there will be an issue. Worst case you can lap it with some valve compound - that's what I did with my redding set and it worked. Also, FWIW, redding seating stems fit in the die which was very convenient for me because I have several redding stems for different projectiles - I am mostly shooting berger 220 LRHT with good results but I have some test 230 A-Tip rounds loaded up to test today.