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Rifles, Reloading, Optics, Equipment
Reloading
Case stretch during full length resize
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<blockquote data-quote="QuietTexan" data-source="post: 2396755" data-attributes="member: 116181"><p>For starters:</p><ul> <li data-xf-list-type="ul">Your Redding Type S die is great, you don't need to buy a different die, the Redding die will work correctly for you (at least for right now). This isn't a die problem in your situation.</li> <li data-xf-list-type="ul">There is nothing wrong with a 0.002" length increase on the first resizing.</li> <li data-xf-list-type="ul">There is nothing wrong with the web not sizing down on the first resizing.</li> <li data-xf-list-type="ul">You don't necessarily need to screw it down tighter, instead focus on correctly setting up the die.</li> <li data-xf-list-type="ul">I would recommend a headspace comparator to assist setting up the die correctly.</li> <li data-xf-list-type="ul">Your brass likely hasn't grown enough yet to worry about bumping shoulders yet. (Murtfree <img class="smilie smilie--emoji" loading="lazy" alt="👍" title="Thumbs up :thumbsup:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f44d.png" data-shortname=":thumbsup:" />)<ul> <li data-xf-list-type="ul">This is why you're seeing a length increase from the body being sized, but the shoulders aren't being moved by the die.</li> <li data-xf-list-type="ul">Or you've set it up so tight already you're bumping the shoulders back too far and causing growth, and screwing the die down will just make your excessive sizing problem worse.</li> <li data-xf-list-type="ul">The best (IMO) solution that will be accurate and repeatable starts with measuring and getting hard numbers to work with.</li> </ul></li> </ul><p>Where I would start it this:</p><ol> <li data-xf-list-type="ol">Check the fit of the brass how it is now, as-fired and before sizing, in the chamber. Does the bolt close without resistance? Do you have to jam it home? (exactly what PddPdd said <img class="smilie smilie--emoji" loading="lazy" alt="👍" title="Thumbs up :thumbsup:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f44d.png" data-shortname=":thumbsup:" /> , but if you have any brass you haven't sized yet try them also)</li> <li data-xf-list-type="ol">Measure the shoulder with a headspace comparator.</li> <li data-xf-list-type="ol">Set up your die correctly, even if that means it doesn't move the shoulder on the first resizing - watch Greg's video below</li> <li data-xf-list-type="ol">Cases will increase in length even with the PRC shoulder. Don't bother trimming until the cases stabilize. If you load a round and chamber check it, make sure it doesn't have a shiny ring at the end of the case neck that would indicate it being too long. Odds are they aren't after one firing. (You can also run a digital borescope down from the muzzle to check a fired case in the chamber to see how much length you have to spare).</li> <li data-xf-list-type="ol">PRC die problem - don't worry about it yet. </li> </ol><p></p><p></p><p>How to set up a die correctly: (instructions included with dies are not correct for 90+% of sizing situations IMO)</p><p>[MEDIA=youtube]rRu8NYCq9Y0[/MEDIA]</p><p></p><p>Functional:</p><p>[MEDIA=amazon]B000PD5VN8[/MEDIA]</p><p></p><p>Fancy:</p><p>[URL unfurl="true"]https://shortactioncustoms.com/product/modular-headspace-comparator-kit/[/URL]</p><p></p><p></p><p>Teslong borescopes (there are a bunch of options, I use the flexible wifi model):</p><p>[MEDIA=amazon]B096Z65FT7[/MEDIA]</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2396755, member: 116181"] For starters: [LIST] [*]Your Redding Type S die is great, you don't need to buy a different die, the Redding die will work correctly for you (at least for right now). This isn't a die problem in your situation. [*]There is nothing wrong with a 0.002" length increase on the first resizing. [*]There is nothing wrong with the web not sizing down on the first resizing. [*]You don't necessarily need to screw it down tighter, instead focus on correctly setting up the die. [*]I would recommend a headspace comparator to assist setting up the die correctly. [*]Your brass likely hasn't grown enough yet to worry about bumping shoulders yet. (Murtfree 👍) [LIST] [*]This is why you're seeing a length increase from the body being sized, but the shoulders aren't being moved by the die. [*]Or you've set it up so tight already you're bumping the shoulders back too far and causing growth, and screwing the die down will just make your excessive sizing problem worse. [*]The best (IMO) solution that will be accurate and repeatable starts with measuring and getting hard numbers to work with. [/LIST] [/LIST] Where I would start it this: [LIST=1] [*]Check the fit of the brass how it is now, as-fired and before sizing, in the chamber. Does the bolt close without resistance? Do you have to jam it home? (exactly what PddPdd said 👍 , but if you have any brass you haven't sized yet try them also) [*]Measure the shoulder with a headspace comparator. [*]Set up your die correctly, even if that means it doesn't move the shoulder on the first resizing - watch Greg's video below [*]Cases will increase in length even with the PRC shoulder. Don't bother trimming until the cases stabilize. If you load a round and chamber check it, make sure it doesn't have a shiny ring at the end of the case neck that would indicate it being too long. Odds are they aren't after one firing. (You can also run a digital borescope down from the muzzle to check a fired case in the chamber to see how much length you have to spare). [*]PRC die problem - don't worry about it yet. [/LIST] How to set up a die correctly: (instructions included with dies are not correct for 90+% of sizing situations IMO) [MEDIA=youtube]rRu8NYCq9Y0[/MEDIA] Functional: [MEDIA=amazon]B000PD5VN8[/MEDIA] Fancy: [URL unfurl="true"]https://shortactioncustoms.com/product/modular-headspace-comparator-kit/[/URL] Teslong borescopes (there are a bunch of options, I use the flexible wifi model): [MEDIA=amazon]B096Z65FT7[/MEDIA] [/QUOTE]
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Case stretch during full length resize
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