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Rifles, Reloading, Optics, Equipment
Reloading
Headspace 10-round sample
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<blockquote data-quote="bigedp51" data-source="post: 1421632" data-attributes="member: 28965"><p>Chas1</p><p>You can not used a Wilson type case gauge to check a "fired" case. This is because the "fired" case diameter can prevent the case from dropping all the way into the gauge.</p><p></p><p>The Wilson type drop in case gauges are used to check full length resized cases. And if the case falls between the low and high steps in the gauge the case is "approximately" the correct size to fit and chamber.</p><p></p><p>Below a Colt 5.56 Field gauge at 1.4736.</p><p></p><p><img src="https://i.imgur.com/F81aB6g.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Below the same Colt headspace gauge in my "adjusted" Hornady cartridge case headspace gauge. And is reading as close as I can get it to the Colt headspace gauge. Meaning the vernier caliper is only accurate to .0005 so the reading is very close.</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" case from my AR15 at 1.4675</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>I then used Redding competition shell holders and adjusted the die to bump the case shoulder back .003. If I had adjusted the die per the dies instructions with the die making hard contact and press cam over the case shoulder would have been pushed back .007. Meaning shorter case life and possible case head separations. </p><p></p><p>Below the cases were fired in a brand new Savage .308 rifle and full length resized with the die making hard contact with the shell holder. Meaning the die was "not" set up for minimum shoulder bump of .001 to .002.</p><p></p><p><img src="https://i.imgur.com/TDwPD1Q.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="https://i.imgur.com/XEuny9C.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The difference in case life was due to case wall thickness and the hardness and quality of the brass.</p><p></p><p>Bottom line, you need a Hornady gauge to measure your fired cases and then set your die up for minimum shoulder bump. And once you get the Hornady gauge you can use the Wilson case gauge as a pen holder and paper weight.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1421632, member: 28965"] Chas1 You can not used a Wilson type case gauge to check a "fired" case. This is because the "fired" case diameter can prevent the case from dropping all the way into the gauge. The Wilson type drop in case gauges are used to check full length resized cases. And if the case falls between the low and high steps in the gauge the case is "approximately" the correct size to fit and chamber. Below a Colt 5.56 Field gauge at 1.4736. [IMG]https://i.imgur.com/F81aB6g.jpg[/IMG] Below the same Colt headspace gauge in my "adjusted" Hornady cartridge case headspace gauge. And is reading as close as I can get it to the Colt headspace gauge. Meaning the vernier caliper is only accurate to .0005 so the reading is very close. [IMG]https://i.imgur.com/kkoU6og.jpg[/IMG] Below a "fired" case from my AR15 at 1.4675 [IMG]https://i.imgur.com/OJqNmQH.jpg[/IMG] I then used Redding competition shell holders and adjusted the die to bump the case shoulder back .003. If I had adjusted the die per the dies instructions with the die making hard contact and press cam over the case shoulder would have been pushed back .007. Meaning shorter case life and possible case head separations. Below the cases were fired in a brand new Savage .308 rifle and full length resized with the die making hard contact with the shell holder. Meaning the die was "not" set up for minimum shoulder bump of .001 to .002. [IMG]https://i.imgur.com/TDwPD1Q.jpg[/IMG] [IMG]https://i.imgur.com/XEuny9C.jpg[/IMG] The difference in case life was due to case wall thickness and the hardness and quality of the brass. Bottom line, you need a Hornady gauge to measure your fired cases and then set your die up for minimum shoulder bump. And once you get the Hornady gauge you can use the Wilson case gauge as a pen holder and paper weight. [/QUOTE]
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Headspace 10-round sample
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