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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Headspace conundrum
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<blockquote data-quote="lancetkenyon" data-source="post: 2818376" data-attributes="member: 68875"><p>I disagree to some of this.</p><p>Yes, a belted magnum is supposed to headspace off the belt. But it still has play. Some brass much more than others. There are still big variations from base to top of belt in some brass.</p><p></p><p>But the case can and will most definitely stretch above the web. Both initially and upon subsequent firings if you are bumping the shoulders too far back. I bump shoulders like any other cartridge after they fully grow. .002-.003".</p><p></p><p>Have you never had a piece of belted magnum brass eventually have case head separation? I did on firing #10 on 1 piece of 7RM.</p><p></p><p>Why do you think Peterson .300WM Long brass is so popular?</p></blockquote><p></p>
[QUOTE="lancetkenyon, post: 2818376, member: 68875"] I disagree to some of this. Yes, a belted magnum is supposed to headspace off the belt. But it still has play. Some brass much more than others. There are still big variations from base to top of belt in some brass. But the case can and will most definitely stretch above the web. Both initially and upon subsequent firings if you are bumping the shoulders too far back. I bump shoulders like any other cartridge after they fully grow. .002-.003". Have you never had a piece of belted magnum brass eventually have case head separation? I did on firing #10 on 1 piece of 7RM. Why do you think Peterson .300WM Long brass is so popular? [/QUOTE]
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Headspace conundrum
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