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Rifles, Reloading, Optics, Equipment
Reloading
OAL questions
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<blockquote data-quote="QuietTexan" data-source="post: 2186663" data-attributes="member: 116181"><p>You're describing the situation correctly, but you aren't actually measuring the point of interface between the meplat and rifling with the comparator, rather some point further out on the meplat. In theory there's a constant relationship between your measurement and where the bullet engages the lands, but the actual measurement itself doesn't mean anything.</p><p></p><p>This is an example of a tool that would have a meaningful measurement, in that it's cut more closely to an actual chamber versus the Hornady which is an oblong hole of varying size. My 30cal Hornady insert is undersized and not concentric with a minimum ID of .280" and maximum of ID .293" (as I suspect all of them are because they're so cheap).</p><p>[URL unfurl="true"]https://www.shortactioncustoms.com/modular-headspace-comparator-inserts-1[/URL]</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2186663, member: 116181"] You're describing the situation correctly, but you aren't actually measuring the point of interface between the meplat and rifling with the comparator, rather some point further out on the meplat. In theory there's a constant relationship between your measurement and where the bullet engages the lands, but the actual measurement itself doesn't mean anything. This is an example of a tool that would have a meaningful measurement, in that it's cut more closely to an actual chamber versus the Hornady which is an oblong hole of varying size. My 30cal Hornady insert is undersized and not concentric with a minimum ID of .280" and maximum of ID .293" (as I suspect all of them are because they're so cheap). [URL unfurl="true"]https://www.shortactioncustoms.com/modular-headspace-comparator-inserts-1[/URL] [/QUOTE]
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