Headspace was measured and recorded. Shoulder was bumped back two thousands.
Another member was trying to approach me in a manner rather rude a few days ago, he said he would have to take my for it, and then another member said he would not trust and or believe anyone that claimed they were taking my word for 'it'. I understand the length of the chamber was measured from the shoulder to the bolt face, I understand there was an attempt to move the shoulder back .002", that is the problem I have when sizing, I find it impossible to move the shoulder back, I can shorten the case from the shoulder to the case head but when I finish I do not have the same shoulder I started with.
The case in the picture is a classic example of case head separation, case head separation happens when the case head separates from the case body, no one ever ask; "How does that happen?" If it happens to me it is caused by the case locking onto the chamber when fired with clearance, if the clearance is between the shoulder of the case and shoulder of the chamber the case can not separate: But if the clearance is between the bolt face and the case head expect the case to stretch and or separate between the case head and case body. The case pictured was fired 3 times.
And then there is that thing with stretch and or flow, or is it both? I have fired many rounds that got longer from the shoulder to the case head, when that happens I expect the neck to get shorter from the shoulder/neck juncture to the end of the neck. The one thing I do not want to happen to the neck is stay the same length, if the neck stays the same length I can count of the case stretching between the case head and case body.
F. Guffey