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Rifles, Reloading, Optics, Equipment
Gunsmithing
7PRC AW spec reamer?
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<blockquote data-quote="Jud96" data-source="post: 3092579" data-attributes="member: 69478"><p>Those are the freebore diameter specs. The larger diameter allows room for fouling and bullets that are larger than the nominal 0.284 (some are 0.2843-0.2845). There may be other benefits, but those are the two I know if. It doesn't necessarily have anything to do with bullet weight. </p><p></p><p></p><p>The chambers are too tight in the body area and cause extraction problems with multiple fired cases. The only dimensions that affect precision are in the neck and throat areas. The tighter freebore diameters and proper freebore lengths aid in accuracy compared to older outdated SAAMI design. Wildcatters, benchrest shooters, gunsmiths, etc have been running modified and tighter neck and throat dimensions for years to achieve improved results. Too loose isn't the best and neither is too tight so finding the sweet spot is what everyone is trying to do.</p></blockquote><p></p>
[QUOTE="Jud96, post: 3092579, member: 69478"] Those are the freebore diameter specs. The larger diameter allows room for fouling and bullets that are larger than the nominal 0.284 (some are 0.2843-0.2845). There may be other benefits, but those are the two I know if. It doesn’t necessarily have anything to do with bullet weight. The chambers are too tight in the body area and cause extraction problems with multiple fired cases. The only dimensions that affect precision are in the neck and throat areas. The tighter freebore diameters and proper freebore lengths aid in accuracy compared to older outdated SAAMI design. Wildcatters, benchrest shooters, gunsmiths, etc have been running modified and tighter neck and throat dimensions for years to achieve improved results. Too loose isn’t the best and neither is too tight so finding the sweet spot is what everyone is trying to do. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
7PRC AW spec reamer?
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