Inconsistent shoulder bump

[DellaDog]

Over the life of these specific Peterson 6.6 CM cases (now at 18 reloads), I’m sizing with Whidden full length bushing dies.

 

[DellaDog]

You are not understanding me. I'm saying are you using a case that you've fired 3x times or more, with minimal to no sizing other than the neck, to use as your baseline for setting that thou to thou and a half bump?

Ah, light bulb coming on I think. You’re saying use a case thats been fired 3+ times, with little to no bump, and use that as the go to size for future sizings. (With maybe -.001 for good measure?)

And consequently, spring back will suffice after that?

Pretty sure thats where I’m at regardless.