As I continue to recover my Swaging dies and jacket dies for my .308, it appears I don't have a core seating die. I need to find out the ins and outs of the die body. I can either drill and polish/lap the the hole through the die body or bore which could be challenging due to the small diameter of the hole. Where I fall short the correct way to lap and what diameter to start lapping. My guess would be work up to a "Q" drill bit then start lapping. Any advice would be greatly appreciated since ALL web research died in the computer crash.
Thanks, Bill