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Rifles, Reloading, Optics, Equipment
Reloading
Revisiting: sorting cases by weight
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<blockquote data-quote="Mikecr" data-source="post: 1660500" data-attributes="member: 1521"><p>tbrice23, barrel timing is heavily tied to powder burn rate -which is significantly affected by variances (like neck tension) early in the burn. Volume & chamber fit are as much or more a part of this than your comparative potentials so far.</p><p></p><p>What every reloader needs to understand is that variances do not affect pressure without also affecting powder burn rate. Higher intial pressure, causes higher initial burn rate, causing higher pressure per <em>some amount</em> of time.</p><p>With a forgiving load (some might call OCW), an early spike can be countered further down a bore, but this contributes nothing good to consistency in barrel time (too late).</p><p>This is part of why OCW loads are not usually the most accurate loads. They're just forgiving.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1660500, member: 1521"] tbrice23, barrel timing is heavily tied to powder burn rate -which is significantly affected by variances (like neck tension) early in the burn. Volume & chamber fit are as much or more a part of this than your comparative potentials so far. What every reloader needs to understand is that variances do not affect pressure without also affecting powder burn rate. Higher intial pressure, causes higher initial burn rate, causing higher pressure per [I]some amount[/I] of time. With a forgiving load (some might call OCW), an early spike can be countered further down a bore, but this contributes nothing good to consistency in barrel time (too late). This is part of why OCW loads are not usually the most accurate loads. They're just forgiving. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Revisiting: sorting cases by weight
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