Ok, I can often over think things.
But exactly what is a full- length sizing die supposed to accomplish? It sizes the full-length that's a circular argument.
I take a fired case and use that die. Is it supposed to, depending on where I set it, push the case from top to bottom allowing me to set the case length into spec? Or is it messing with the case diameter in a way I can't fathom?
Is it supposed to, depending on where I set it, smoosh the case back down to a pre-fired state? I don't think so but it crosses my brain.
To add to the complication, I've read that a case fired through a particular rifle expands to fit the rifle's chamber so just needs neck sizing.
Question about full-length sizing dies?
1Heller and McDonald are precedents to be followed, not obstacles
to be overcome
to be overcome