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Rifles, Reloading, Optics, Equipment
Reloading
Headspace gauge/resizing die question
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<blockquote data-quote="338winmag" data-source="post: 472822" data-attributes="member: 29912"><p>Thanks for the reply 7 Loader. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p> </p><p>Been down this road too many times but will state it once more.</p><p> </p><p>Regarding --> "but I tend to follow the directions From the people that designed the equipment first".</p><p> </p><p>This is where I have a problem. I have actually spoken with two manufacturers regarding this exact topic. they will do a slight side-step and backstep in the discussion. </p><p> </p><p>As I was told, die manufacturers do not specify how many times a case can or should be reloaded. Their instructions pertain to "resizing the brass" and not "resizing the brass, 1, 2, 3, 4, or more times". They state "so much of a turn" in correlation to the number of threads per inch per turn and give that as a starting point.</p><p> </p><p>If one resizes over and over and does not properly resize headspace to shoulder for minimum headspace, the firing and resizing will severely over-work the brass so much that a wall weakness (thinning) will occur in the case just above the head. Properly resizing from the start will minimize this occurence and safely extend the case life.</p><p> </p><p>Contrary to popular belief that keeps on getting passed on to others, it is not a "over normal pressure" or "high pressure" issue as some people state, but rather just the normal everyday pressure affecting a <strong>"now weak spot on the brass"</strong>. If one never resized the brass case and could get away with it still chambering, a thinning of the wall would never take place before the brass was totally useless.</p><p> </p><p>Continuous firing and "improper resizing" causes the case (usually belted cases) to become defective case and this is what causes incipient headspace separation and not excessive pressure on a healthy case.</p><p> </p><p>Excessive pressure causes other issues but it is not the reason for incipient headspace separation though it can complete the incipient headspace separation cycle. </p><p> </p><p>Again incipient headspace separation is from "firing and ""incorrect over headspace resizing"" causing a thinning of the cartridge wall at its weakess point. </p><p> </p><p>Some deep research will prove this to be true. I will stand firmly behind my statement for the safety of friends, fellow reloaders and family for reloading. </p><p><strong><u><span style="color: #ff0000">Skip that touchy-feely-turney approach.</span></u></strong></p><p> </p><p>Nothing personal here, really, but how many will do the same when just stating, "oh just follow the manufacturer's book and give it a 1/4 turn or so untill it feels just right." We are talking about thousands of an inch here. </p><p> </p><p> </p><p>Thanks All</p><p>I have given my thoughts and will move on.</p></blockquote><p></p>
[QUOTE="338winmag, post: 472822, member: 29912"] Thanks for the reply 7 Loader. ;) Been down this road too many times but will state it once more. Regarding --> "but I tend to follow the directions From the people that designed the equipment first". This is where I have a problem. I have actually spoken with two manufacturers regarding this exact topic. they will do a slight side-step and backstep in the discussion. As I was told, die manufacturers do not specify how many times a case can or should be reloaded. Their instructions pertain to "resizing the brass" and not "resizing the brass, 1, 2, 3, 4, or more times". They state "so much of a turn" in correlation to the number of threads per inch per turn and give that as a starting point. If one resizes over and over and does not properly resize headspace to shoulder for minimum headspace, the firing and resizing will severely over-work the brass so much that a wall weakness (thinning) will occur in the case just above the head. Properly resizing from the start will minimize this occurence and safely extend the case life. Contrary to popular belief that keeps on getting passed on to others, it is not a "over normal pressure" or "high pressure" issue as some people state, but rather just the normal everyday pressure affecting a [B]"now weak spot on the brass"[/B]. If one never resized the brass case and could get away with it still chambering, a thinning of the wall would never take place before the brass was totally useless. Continuous firing and "improper resizing" causes the case (usually belted cases) to become defective case and this is what causes incipient headspace separation and not excessive pressure on a healthy case. Excessive pressure causes other issues but it is not the reason for incipient headspace separation though it can complete the incipient headspace separation cycle. Again incipient headspace separation is from "firing and ""incorrect over headspace resizing"" causing a thinning of the cartridge wall at its weakess point. Some deep research will prove this to be true. I will stand firmly behind my statement for the safety of friends, fellow reloaders and family for reloading. [B][U][COLOR=#ff0000]Skip that touchy-feely-turney approach.[/COLOR][/U][/B] Nothing personal here, really, but how many will do the same when just stating, "oh just follow the manufacturer's book and give it a 1/4 turn or so untill it feels just right." We are talking about thousands of an inch here. Thanks All I have given my thoughts and will move on. [/QUOTE]
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