SWMBO has acquired a few things from her father, one is a 30-06 CZ which she was intending to keep. I went to load up some rounds to test in it from a stock of fired brass that her father had been using, and when I was recapping with the neck sizing die, the case sailed right through.
A quick check of some brand new Lapua brass and the die felt right. Projectiles sat right, but the fired brass was so wide in the neck that a 30 cal projectile will fall in.
My question is besides full length resizing, what is causing this? A really worn out chamber? That's all I can put it down to.