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Rifles, Reloading, Optics, Equipment
Reloading
Why is primer seating important?
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<blockquote data-quote="Mikecr" data-source="post: 1807427" data-attributes="member: 1521"><p>When you size metal, you're adding dynamic energy to it.</p><p>It's no longer at lowest energy balance, as everything in the cosmos seeks.</p><p>Our brass alloys spring back from sizing, relaxing most of this right off the bat, but not all of it. There is a bit more energy that releases over time, as seen by either continued free dimension changes, or tension force changes.</p><p></p><p>Over time, necks change dimension or tension, case shoulders loose bump, sized case bodies change, and so do primer pockets & cups. All of this opposite of last action (energy applied). Primers are put into an angled tension with pockets, and creep outward.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1807427, member: 1521"] When you size metal, you're adding dynamic energy to it. It's no longer at lowest energy balance, as everything in the cosmos seeks. Our brass alloys spring back from sizing, relaxing most of this right off the bat, but not all of it. There is a bit more energy that releases over time, as seen by either continued free dimension changes, or tension force changes. Over time, necks change dimension or tension, case shoulders loose bump, sized case bodies change, and so do primer pockets & cups. All of this opposite of last action (energy applied). Primers are put into an angled tension with pockets, and creep outward. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Why is primer seating important?
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