This got me thinking and I just checked my Hornady die decapping pin (I almost never use this dieset). It's rounded as well but not as much. The interesting part to me is how rough it it compared to my Lee dies. You can feel the circular pattern of whatever cut the shape on the tip. Run your nail down it and it grips the nail in exactly the wrong direction. I may take it out, put it in a drill and polish it up. My Lee are perfectly smooth.