Re: Winchester 308 brass with off center flash holes
For my 1200th post here, I give you this little nugget of wisdom:
Forget the flash holes with Winchester .308 brass, check the neck lengths.
I reloaded for two buddies this time last year, before they got their reloading kits in and each bought 500 pieces of Winchester .308 brass during the Midway sale, which were sent to me.
I started reloading them and upon seating, I rolled the shoulders on maybe 15-20 out of the 700 I processed. I couldn't figure it out and thought maybe the necks were too tight, despite using a Redding carbide button to straighten any of the dented necks out.
I checked my Hornady inline seating die for crimp and it was fine, but I couldn't see what was causing the shoulder rolls until I noticed one with what looked to be a longish neck. Sure enough, the case(s) in question measured 2.845" and that added length was in the neck and not a 'full retard' body/headspace problem.
Once I knew what the issue was, I carefully culled out the remaining long ones and simply trimmed them down, but heck if I didn't have to spend some added time resizing those screwed up shoulders and look at each one individually as I pulled them from their bags.
Just be mindful of this and if you come across this problem without inspection, it's not your crimping step causing the issue, or tighter than normal necks.
Chris