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Rifles, Reloading, Optics, Equipment
Gunsmithing
Head space problem
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<blockquote data-quote="shortgrass" data-source="post: 937380" data-attributes="member: 24284"><p>When a Mauser bolt face is opened to magnum the face is usually 'squared' at the same time. You need to take a micrometer and measure the diameter of the fired case right ahead of the belt. It should measure .532" or less. If it measures more than that, the chamber is over sized in its diameter. You should, also, check the head space with gauges. The bolt should close without resistance on the GO and should not close on the NO-GO. Head space on a belted magnum is measured from the front of the belt to the bolt face. That's what gauges will be measuring. Removing material from the bolt face, like it sounds like was done, could increase head space. Whoever did the bolt squaring should have checked head space when he was done.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 937380, member: 24284"] When a Mauser bolt face is opened to magnum the face is usually 'squared' at the same time. You need to take a micrometer and measure the diameter of the fired case right ahead of the belt. It should measure .532" or less. If it measures more than that, the chamber is over sized in its diameter. You should, also, check the head space with gauges. The bolt should close without resistance on the GO and should not close on the NO-GO. Head space on a belted magnum is measured from the front of the belt to the bolt face. That's what gauges will be measuring. Removing material from the bolt face, like it sounds like was done, could increase head space. Whoever did the bolt squaring should have checked head space when he was done. [/QUOTE]
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Head space problem
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