Thread: Re-sizing Issues-Tight Chamber?

I had a similar problem years ago. Sized cases wouldn't fit. They did in the beginning but then stopped fitting. Anyway after much mucking around I used my dies in another persons press and problem went away. I could load some calibers but not my wsm so came to the conclusion that the brass was much stronger than my old press liked and flexed slightly so didn't bump the shoulder back. Bought a new press and same dies and cases were fine. Try all that's been said above first as that would be logical but if that fails don't rule out the press especially if it's an alloy one rather than a cast.