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Ahhh, ok. I always full length resize after each firing. That’s probobably why they only last a couple loads.
Get yourself a bushing neck sizing only die and only bump the shoulder back when you have to, problem solved.
Quote from: b23 on July 04, 2020, 07:32:43 AMGet yourself a bushing neck sizing only die and only bump the shoulder back when you have to, problem solved.https://video.search.yahoo.com/search/video?fr=mcafee&p=stop+neck+sizing+your+brass+youtube#id=1&vid=072dcfcc6301d427e859efb492a414f6&action=clicktier one national shooter. I have moved on from neck sizing ( over a year ago and so has everyone else I shoot with) because of the very issues he mentions popping up. I also recommend a case checker gage and you may identify a problem by simply down loading and printing the SAAMI schematic for your cartridge so you can compare measures to be sure the problem isn't the chamber, which I have seen. I have schematics for everything I load in the event I need to run down a glitch. Compare measures of fired brass to schematic.
I also use some Nosler brass for my 7mm rem mag and that is what made me aware of the limitations of neck only sizing. I have also learned that 2, 3, 4, or even 5k bump will work fine, the big objective is in uniformity as having them all be as close as possible to the same.
Biggest problem I have is eventually you wind up with cases hard to chamber because the case head is oversized at the web and that will eventually lead to separation. Neck sizing only DOES cause the web area of the case to enlarge leading to the problems Ive mentioned.