I definitely can tell the difference in groups fired with cartridges that have run-out that varies by .002/.008. My question was “do straightened rounds shoot on a par with rounds that are concentric to begin with”.
FC,
Your’s is the answer I was looking for and hope is true since it seems that I have to straighten several out of a box of fifty. Thanks.
Mule Deer,
It is your fault (along with Mathman) that I question such things as run-out. I read your books! For years I just took whatever came out of the bullet seating die and wondered about those fliers......
Steve,
To clarify, I don’t remove primers with the sizing die but instead use a universal decapper for that purpose. The reason I leave the expander stem loose is that I re-size without it in the die, then in an added step I re-install the stem and expand the necks on the upstroke of the case. I leave it loose thinking it will self-center as it goes into the case.
