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Hunting
Long Range Hunting & Shooting
Shoulder Bump
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<blockquote data-quote="Varmint Hunter" data-source="post: 2435324" data-attributes="member: 313"><p>Does your "case length guage" measure overall length or headspace? These would be different measurements. Bumping shoulders back a few thousandths has nothing to do with the case's overall length. It does allow you to minimalize the amount you resize for better case life and (usually) better shot-to-shot consistency.</p><p>Overall case length is a measurement to ensure that your case does not exceed the chamber limits for the case's length. Case length should be measured after sizing because cases often measure longer after FL sizing.</p><p>An excessively long case could cause the case mouth to be jammed into the bullet as the bolt is closed. This would result in a dramatic increase in pressure.</p></blockquote><p></p>
[QUOTE="Varmint Hunter, post: 2435324, member: 313"] Does your "case length guage" measure overall length or headspace? These would be different measurements. Bumping shoulders back a few thousandths has nothing to do with the case's overall length. It does allow you to minimalize the amount you resize for better case life and (usually) better shot-to-shot consistency. Overall case length is a measurement to ensure that your case does not exceed the chamber limits for the case's length. Case length should be measured after sizing because cases often measure longer after FL sizing. An excessively long case could cause the case mouth to be jammed into the bullet as the bolt is closed. This would result in a dramatic increase in pressure. [/QUOTE]
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