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Rifles, Reloading, Optics, Equipment
Reloading
I seriously doubt this is case head separation but what do you guys think?
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<blockquote data-quote="bigedp51" data-source="post: 1410193" data-attributes="member: 28965"><p>The Hornady cartridge case headspace gauge is not a chamber headspace gauge, it is a comparator gauge. Meaning many cases will not be measured at the exact datum line as a headspace gauge will in the chamber. And as long as you measure a fired case in the Hornady gauge it will tell you how far you have bumped the case shoulder after sizing. And it will be more accurate than using a Wilson type case gauge.</p><p></p><p>Below a Colt 5.56 Field gauge at 1.4736</p><p></p><p><img src="https://i.imgur.com/MLSZTeH.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Below the same headspace gauge in a adjusted Hornady gauge. A .011 feeler gauge was placed between silver and red sections of the gauge to read the same as the Colt gauge. The average vernier caliper is accurate to .0005 or half a thousands.</p><p></p><p><img src="https://i.imgur.com/kkoU6og.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Below a fired Lake City 5.56 case from my AR15 in my Hornady gauge, and then the die was set up to bump the shoulder back .003.</p><p></p><p><img src="https://i.imgur.com/OJqNmQH.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The problem is the OP was asking why his cases are longer in over all length after sizing.</p><p>And the OP has his shoulder bump down to .001 or .002 and it my understanding his shoulder bump is not the problem.</p><p></p><p>My English teacher would tell us to "not" write what you are thinking and think about what you are writing.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1410193, member: 28965"] The Hornady cartridge case headspace gauge is not a chamber headspace gauge, it is a comparator gauge. Meaning many cases will not be measured at the exact datum line as a headspace gauge will in the chamber. And as long as you measure a fired case in the Hornady gauge it will tell you how far you have bumped the case shoulder after sizing. And it will be more accurate than using a Wilson type case gauge. Below a Colt 5.56 Field gauge at 1.4736 [IMG]https://i.imgur.com/MLSZTeH.jpg[/IMG] Below the same headspace gauge in a adjusted Hornady gauge. A .011 feeler gauge was placed between silver and red sections of the gauge to read the same as the Colt gauge. The average vernier caliper is accurate to .0005 or half a thousands. [IMG]https://i.imgur.com/kkoU6og.jpg[/IMG] Below a fired Lake City 5.56 case from my AR15 in my Hornady gauge, and then the die was set up to bump the shoulder back .003. [IMG]https://i.imgur.com/OJqNmQH.jpg[/IMG] The problem is the OP was asking why his cases are longer in over all length after sizing. And the OP has his shoulder bump down to .001 or .002 and it my understanding his shoulder bump is not the problem. My English teacher would tell us to "not" write what you are thinking and think about what you are writing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
I seriously doubt this is case head separation but what do you guys think?
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