Thread: Case lengthening when bump sizing

I couldn't disagree more with the original post. In the final stages of a FL die operating the shoulder is being pushed back and the body of the case squeezed. It is not like a balloon being squeezed where the air poops out the top. Brass is a metal it doesn't miraculously flow out the top and lengthen the case. If a case doesn't chamber after sizing it is either too big in the body, too long at the shoulder, too long overall or with belted case types too fat in front of the belt. Or you could have an out of spec chamber. If you are hunting screw the die down to get a solid bump on the shell holder before inserting a case. If you are loading for competition well, I don't need to tell you anything really.