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Rifles, Reloading, Optics, Equipment
Reloading
Case head separation.
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<blockquote data-quote="tdot" data-source="post: 1761923" data-attributes="member: 91330"><p>If you're fired brass chambers easily without resizing, then you likely dont need to resize it much, if any at all. Really you just need the neck resized so that you can fire it again. </p><p></p><p>It can often take more then one firing to properly size the case to the chamber. If it isnt tight to close the bolt on a fired case, then that case hasnt likely conformed to your chamber 100%.</p><p></p><p>The case head separation may have occurred because you just resized the brass way too much, trying to put it back to factory length. </p><p></p><p>Chamber on the high side of SAAMI and a die on the low side, a couple high pressure firings... </p><p></p><p>Another cheater method, without the proper measuring tools. First remove the expander ball. Then back the die way up off the ram. Then resize. You should be able to see where the neck has been sized down and where it is still too large. Sneak the die down until the neck is 100% sized down and you arent pushing the shoulder back. Put the expander ball back in for final resize. </p><p></p><p>As you approach the shoulder, 1/16 turn of the die is still .004", so smaller adjustments may be required. Use lots of lube.</p><p></p><p>Work carefully and the proper measuring tools make it safer and more consistent/reliable.</p></blockquote><p></p>
[QUOTE="tdot, post: 1761923, member: 91330"] If you're fired brass chambers easily without resizing, then you likely dont need to resize it much, if any at all. Really you just need the neck resized so that you can fire it again. It can often take more then one firing to properly size the case to the chamber. If it isnt tight to close the bolt on a fired case, then that case hasnt likely conformed to your chamber 100%. The case head separation may have occurred because you just resized the brass way too much, trying to put it back to factory length. Chamber on the high side of SAAMI and a die on the low side, a couple high pressure firings... Another cheater method, without the proper measuring tools. First remove the expander ball. Then back the die way up off the ram. Then resize. You should be able to see where the neck has been sized down and where it is still too large. Sneak the die down until the neck is 100% sized down and you arent pushing the shoulder back. Put the expander ball back in for final resize. As you approach the shoulder, 1/16 turn of the die is still .004", so smaller adjustments may be required. Use lots of lube. Work carefully and the proper measuring tools make it safer and more consistent/reliable. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Case head separation.
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