What is considered the proper dimensional difference between the bullet diameter and the expander ball diameter to achieve optimum neck tension on the bullet.
I ask because a friend is concerned about a ring on the bullet caused by the seating process. I told him that the ring is probably only cosmetic but if it bothered him he could smooth up the edge of the bullet seater or measure the bullet and expander ball to see if there is too large a difference that is causing excessive neck tension and therefore higher pressure to seat the bullet. However, I didn't know what is considered proper for neck tension.
Thanks for your help.
I ask because a friend is concerned about a ring on the bullet caused by the seating process. I told him that the ring is probably only cosmetic but if it bothered him he could smooth up the edge of the bullet seater or measure the bullet and expander ball to see if there is too large a difference that is causing excessive neck tension and therefore higher pressure to seat the bullet. However, I didn't know what is considered proper for neck tension.
Thanks for your help.