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Rifles, Reloading, Optics, Equipment
Reloading
Virgin brass, or once fired!
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<blockquote data-quote="DJ Fergus" data-source="post: 1907294" data-attributes="member: 93895"><p>Your head space can and probably will be different from a virgin case to a fully sized case and even different from a neck sized only case. When the firing pin drives the cartridge forward, the case moves a different amount forward depending on how much head space difference you might have. So if the bullet is seated to the same coal, it's actually getting released from the case at different lengths from the lands. All that being said, how much all of that effects the group size of any particular rifle, cartridge load & bullet combo is anyone's guess.</p></blockquote><p></p>
[QUOTE="DJ Fergus, post: 1907294, member: 93895"] Your head space can and probably will be different from a virgin case to a fully sized case and even different from a neck sized only case. When the firing pin drives the cartridge forward, the case moves a different amount forward depending on how much head space difference you might have. So if the bullet is seated to the same coal, it's actually getting released from the case at different lengths from the lands. All that being said, how much all of that effects the group size of any particular rifle, cartridge load & bullet combo is anyone's guess. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Virgin brass, or once fired!
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