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Rifles, Reloading, Optics, Equipment
Reloading
How to find a MINIMUM powder charge
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<blockquote data-quote="bigedp51" data-source="post: 1330016" data-attributes="member: 28965"><p>With a workup load your primers protrude from the base of the case until the chamber pressures is great enough to force the case against the bolt face.</p><p></p><p>Meaning light loads would not form the case to the chambers headspace dimensions.</p><p></p><p>Example, with my 30-30 Winchester at 38,000 cup or 42,000 psi the primers always protrude from the rear of the case.</p><p></p><p>Bottom line, fire forming loads need enough chamber pressure to make the base of the case stretch to meet the bolt face. And if the chamber pressure is not high enough the fired cases will still have excessive head clearance.</p><p></p><p><img src="http://i.imgur.com/HK76WCp.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The only methods I know of to solve this would be a false shoulder or jamming your bullets into the rifling to keep the rear of the case against the bolt face.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1330016, member: 28965"] With a workup load your primers protrude from the base of the case until the chamber pressures is great enough to force the case against the bolt face. Meaning light loads would not form the case to the chambers headspace dimensions. Example, with my 30-30 Winchester at 38,000 cup or 42,000 psi the primers always protrude from the rear of the case. Bottom line, fire forming loads need enough chamber pressure to make the base of the case stretch to meet the bolt face. And if the chamber pressure is not high enough the fired cases will still have excessive head clearance. [img]http://i.imgur.com/HK76WCp.jpg[/img] The only methods I know of to solve this would be a false shoulder or jamming your bullets into the rifling to keep the rear of the case against the bolt face. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How to find a MINIMUM powder charge
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