Resized 6x47 brass won't chamber

[P72]

I have a 6.5X47 Lapua and I loaded up a bunch of new factory brass and they worked just fine. I liked the tiny groups and low recoil - was thrilled. But after 4-5 firings with this $1.25 (more or less) piece brass it became more difficult to chamber the expensive but still great appearing brass. I used Forster F/L dies with the neck portion opened up to .288 inches. Knowing that my turn bolt action with dual lugs did not have nearly the force to make my rifle chamber act like a sizing die I ground down one of my many extra Lee #2 shell holders to increase head-space by squashing the cases more and was not surprised to get terrific results - like long case life, easy chambering - and wonderful accuracy. My simple old Rock Chucker press can exert more force than my dual lug bolt can!