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Rifles, Reloading, Optics, Equipment
Reloading
How to measure chamber depth to seat bullets?
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<blockquote data-quote="MNbogboy" data-source="post: 685820" data-attributes="member: 18849"><p>Tac,</p><p>Imagine Daniel Brother's method only you <strong>slowly</strong> completely close the bolt on your first try....<strong>Slowly</strong> extract the test case and measure....The key is neck tension...It has to be heavy enough to overcome the ejector/extractor but light enough so you can push it in by hand and not so heavy that you drive it into the lands (it will bite the lands some and you will have to allow for that)....</p><p> </p><p>The drilled & tapped case heads and flat spots allow you to easily push the bullet back out (with the eye bolt & wrench) for subsequent measurements and or to change bullets....</p><p> </p><p>I have also used the Daniel Brother's method and have found it to be quite accurate especially with a micrometer seating die....Maybe your inconsistency is related to your brass and the "feel" of just touching the lands is not as evident.....If your brass is not reasonably concentric the bullet will prematurely contact one side of the lead and push the bullet in farther than it would if it were truly concentric....</p><p> </p><p>I will try & take some pictures of these simple gadjets and post them if you would like...</p><p> </p><p>Remember that once you "find" the lands it is or will be just a baseline number and you will work accordingly from there....</p><p> </p><p>Good luck,</p><p>Randy</p></blockquote><p></p>
[QUOTE="MNbogboy, post: 685820, member: 18849"] Tac, Imagine Daniel Brother's method only you [B]slowly[/B] completely close the bolt on your first try....[B]Slowly[/B] extract the test case and measure....The key is neck tension...It has to be heavy enough to overcome the ejector/extractor but light enough so you can push it in by hand and not so heavy that you drive it into the lands (it will bite the lands some and you will have to allow for that).... The drilled & tapped case heads and flat spots allow you to easily push the bullet back out (with the eye bolt & wrench) for subsequent measurements and or to change bullets.... I have also used the Daniel Brother's method and have found it to be quite accurate especially with a micrometer seating die....Maybe your inconsistency is related to your brass and the "feel" of just touching the lands is not as evident.....If your brass is not reasonably concentric the bullet will prematurely contact one side of the lead and push the bullet in farther than it would if it were truly concentric.... I will try & take some pictures of these simple gadjets and post them if you would like... Remember that once you "find" the lands it is or will be just a baseline number and you will work accordingly from there.... Good luck, Randy [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How to measure chamber depth to seat bullets?
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