Thread: Case lengthening when bump sizing

Perhaps I have misunderstood the opening statements around the problem, but if a full length resized case won’t chamber as stated, then in my opinion it just hasn’t been sized enough. I’m not sure about the relationship between this problem statement and the following explanation about case lengthening?
If brass lengthens, as you explain, then it is longer at the neck, not longer at the shoulder where it contacts the chamber, so it would not inhibit chambering.
I believe there is more correlation than causation here and one does not effect the other.