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Rifles, Reloading, Optics, Equipment
Gunsmithing
280 AI alert
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<blockquote data-quote="shortgrass" data-source="post: 2272993" data-attributes="member: 24284"><p>Without lookin', I'm thinking the difference between the gauges for .30-06 is generally .006". .010" is allowable by the print, but .006" is the accepted norm. My gauges for .308 Win. have a difference of .004. Most custom cut chambers are cut closer than that. For a "hunting" chamber, maybe "GO" + .002" max. Saves on brass that way and allows for a proper shoulder 'bump' with your sizing dies. Cut a chamber right at 'GO' and your std die may not 'bump' , in which case a custom sizing die would be needed. For what it's worth, my personal .280 AI (Nosler SAAMI) won't 'crush' Win head stamped .280 Rem cases, and head space is set at "GO" + .002" . I jam the bullet for fire forming. Accuracy is quit acceptable with my fire forming loads,,, good enough for hunting within 500yds, or so.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 2272993, member: 24284"] Without lookin', I'm thinking the difference between the gauges for .30-06 is generally .006". .010" is allowable by the print, but .006" is the accepted norm. My gauges for .308 Win. have a difference of .004. Most custom cut chambers are cut closer than that. For a "hunting" chamber, maybe "GO" + .002" max. Saves on brass that way and allows for a proper shoulder 'bump' with your sizing dies. Cut a chamber right at 'GO' and your std die may not 'bump' , in which case a custom sizing die would be needed. For what it's worth, my personal .280 AI (Nosler SAAMI) won't 'crush' Win head stamped .280 Rem cases, and head space is set at "GO" + .002" . I jam the bullet for fire forming. Accuracy is quit acceptable with my fire forming loads,,, good enough for hunting within 500yds, or so. [/QUOTE]
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