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Old December 5, 2009, 10:30 AM   #2
dardascastbullets
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Join Date: July 20, 2008
Location: Essexville, MI
Posts: 163
To be honest I lost you in your text concerning the dimensions that you were stating. However, the answer to your general question as to why your rounds are shooting more precisely lies in the fact that cases that have been sized to 'closer' to the chamber's dimensions does not afford the cartridge to move forward upon the firing pin striking the primer. As opposed to a case that has 'excessive' headspace whereby the cartridge will move more upon the firing pin strike. The less the cartridge moves the tighter the sytem and the more precise will be the result.
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