Re: Here we go again 260 brass...
I F/L resize all my cases, then ream the flash holes; be it Rem .260 or Win .243/7-08. Same process in all instances. After that, the F/L die get backed off so only a smidge more than 1/2 of the neck length gets resized subsequent.
It's 'the poor man's neck sizer die'. But it does some other things.
It cuts down on brass work hardening, especially in the lower wall region near the case base, where such working and hardening may be contributory to case head separation.
In the neck, it offers some degree of control over neck tension/pull force; the less length resized, the lower the neck tension. Also, in not working the neck/shoulder junction, donuts may be less prominent.
It also leaves the bottom of the case and the bottom of the neck fully expanded to the diameter of the chamber; so when the case is reloaded and rechambered, it has a contact fit, which may help align it parallel and concentric with the bore line.
When I load, I weigh each charge, then drop it back into the case with a drop tube. The powder level gives me some inkling about case capacity, and any one which looks off gets reweighed and redropped. If it still looks off, it's put aside for sighter/fouler rounds. That's about the limit of any efforts of mine related to case capacity.
Greg
