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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Headspace conundrum
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<blockquote data-quote="MagnumManiac" data-source="post: 2818946" data-attributes="member: 10755"><p>The reason is because of statements made by people like you.</p><p>I have NEVER had a case head separation in belted brass because I understand the fundamentals and use chambers (A191) that control shoulder position…but I also use SAAMI match grade chambers and I NEVER bump more than .002" which when measured, due to spring back, is always around .0015".</p><p>I also have measured many belted cases from base to top of belt, I have a gauge for this, not once have I seen brass have a discrepancy as large as what you claim, biggest I've seen was Federal, it was .003" and I don't use that junk anyway.</p><p>Your statement stating that the brass stretches at the web on the first firing is the biggest bunch of crap I have ever herd.</p><p>Please EXPLAIN and show me PROOF that belted cases stretch at the web on the first firing…I so look forward to your foot being deeper in your mouth.</p><p>If a case STRETCHED the amount you imply on the first firing, it would fail on the second firing without a single question…it doesn't happen.</p><p>The number one cause of ANY head separation is excessive headspace, regardless of case type. The number one cause of this is reloaded induced excessive headspace…has NOTHING to do with case design.</p><p>Only case I have ever had head separations with is 6.5x55 Swede, the cases as new had .010" excessive headspace because the PMC company had sized them that way.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2818946, member: 10755"] The reason is because of statements made by people like you. I have NEVER had a case head separation in belted brass because I understand the fundamentals and use chambers (A191) that control shoulder position…but I also use SAAMI match grade chambers and I NEVER bump more than .002” which when measured, due to spring back, is always around .0015”. I also have measured many belted cases from base to top of belt, I have a gauge for this, not once have I seen brass have a discrepancy as large as what you claim, biggest I’ve seen was Federal, it was .003” and I don’t use that junk anyway. Your statement stating that the brass stretches at the web on the first firing is the biggest bunch of crap I have ever herd. Please EXPLAIN and show me PROOF that belted cases stretch at the web on the first firing…I so look forward to your foot being deeper in your mouth. If a case STRETCHED the amount you imply on the first firing, it would fail on the second firing without a single question…it doesn’t happen. The number one cause of ANY head separation is excessive headspace, regardless of case type. The number one cause of this is reloaded induced excessive headspace…has NOTHING to do with case design. Only case I have ever had head separations with is 6.5x55 Swede, the cases as new had .010” excessive headspace because the PMC company had sized them that way. Cheers. [/QUOTE]
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Headspace conundrum
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