When you get one it will be apparent how poor of a job everyone does when cutting your shafts or how hard it is. I cannot imagine what kind of punishment we give to the ends of the shafts and they still hold up. On the other hand maybe they will last longer. The real difference may come in longer range targets tho.
I always square my shell mouths before reloading but have not gotten into straightening out the run-out of the necks. So many neat things to do and so little time and money.[]