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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 STW vs 28 Nosler vs 7 RUM according to Nosler's #8 reloading book
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<blockquote data-quote="J E Custom" data-source="post: 2031977" data-attributes="member: 2736"><p>No problem.</p><p>The SAMMI standard cartridge calls for a datum to case head dimension of 2.460 and a chamber Datum line to case head dimension of 2.469 so if you fire a 7 STW in a SAMMI chamber the datum Line will lengthen by .009 thousandths. and if you don't do a full length sizing you will/should have .009 thousandths to play with and set the headspace .001 to .0025 thousandths and still have.0065 to .008 clearance between the cartridge belt and the chamber belt preventing the belt from coming into play. </p><p></p><p>This may vary depending on how the chamber was cut, but there will be clearance and if sized correctly it will be head spaced off the shoulder not the belt. This will also extend the case life because of less sizing.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 2031977, member: 2736"] No problem. The SAMMI standard cartridge calls for a datum to case head dimension of 2.460 and a chamber Datum line to case head dimension of 2.469 so if you fire a 7 STW in a SAMMI chamber the datum Line will lengthen by .009 thousandths. and if you don't do a full length sizing you will/should have .009 thousandths to play with and set the headspace .001 to .0025 thousandths and still have.0065 to .008 clearance between the cartridge belt and the chamber belt preventing the belt from coming into play. This may vary depending on how the chamber was cut, but there will be clearance and if sized correctly it will be head spaced off the shoulder not the belt. This will also extend the case life because of less sizing. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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7 STW vs 28 Nosler vs 7 RUM according to Nosler's #8 reloading book
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