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Rifles, Reloading, Optics, Equipment
Reloading
Over all length gauge?
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<blockquote data-quote="Mikecr" data-source="post: 2745649" data-attributes="member: 1521"><p>No it isn't. COAL/CBTO is not taken from a shoulder datum, but from the case head/bolt face.</p><p>Most using that method (adjusting from a case shoulder) end up averaging for a final number..</p><p>And unless the test case is fully fireformed (unsized), in YOUR chamber, you have no chance that that average would be right.</p><p></p><p>The only method possibly as accurate, or maybe even better than a cleaning rod method, is demonstrated by Alex Wheeler in a video. </p><p>This is simple trial & error with the firing pin removed. You sneak into free bolt handle fall.</p><p>With no tools, this works.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2745649, member: 1521"] No it isn't. COAL/CBTO is not taken from a shoulder datum, but from the case head/bolt face. Most using that method (adjusting from a case shoulder) end up averaging for a final number.. And unless the test case is fully fireformed (unsized), in YOUR chamber, you have no chance that that average would be right. The only method possibly as accurate, or maybe even better than a cleaning rod method, is demonstrated by Alex Wheeler in a video. This is simple trial & error with the firing pin removed. You sneak into free bolt handle fall. With no tools, this works. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Over all length gauge?
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