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Old October 6, 2012, 07:27 AM   #5
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Join Date: June 17, 2010
Location: Virginia
Posts: 4,719
If you are encountering "case stretch," it's unlikely to be the expander ball** and more likely the sizing die being screwed down to far for the dimensions of the rifle's actual chambere dimensions.

If you are shooting a bolt action, try sizing only enough for the case to barely fit back in the chamber and the bolt close.


** If the expanded ball is truly the problem, it will drag the shoulder forward as opposed to the causing classic case stretch. In either case, get a .
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