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Rifles, Reloading, Optics, Equipment
Reloading
Belted Magnum Head Spacing
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<blockquote data-quote="J E Custom" data-source="post: 1465385" data-attributes="member: 2736"><p>If it is new brass it will form to your chamber, If it has been fired in another chamber it is best to full size it the first time.</p><p></p><p>All brass/cases should be fired in the chamber that they will be used in. with quality brass that is consistant, I will set head space with the go gauge and check the head space using the cases to be used to make sure that they will fit the chamber. Todays brass/cases are all over the place. Some have belt dimensions that are minimum specafication and others are maximum SAMMI dimensions. </p><p></p><p>The minimum dimension is .220, the maximum is .227 so it is best to check the brand of cases before you set the final head space. If you intend to use as shouldered cases, You can head space to maximum and fire form using reduced loads. My preference is to set the head space at .002 more than the case and once fire formed use the shoulder, and that way if I want to full length size i will only have .002 thousandths instead of almost .007 and risk case head seperation.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1465385, member: 2736"] If it is new brass it will form to your chamber, If it has been fired in another chamber it is best to full size it the first time. All brass/cases should be fired in the chamber that they will be used in. with quality brass that is consistant, I will set head space with the go gauge and check the head space using the cases to be used to make sure that they will fit the chamber. Todays brass/cases are all over the place. Some have belt dimensions that are minimum specafication and others are maximum SAMMI dimensions. The minimum dimension is .220, the maximum is .227 so it is best to check the brand of cases before you set the final head space. If you intend to use as shouldered cases, You can head space to maximum and fire form using reduced loads. My preference is to set the head space at .002 more than the case and once fire formed use the shoulder, and that way if I want to full length size i will only have .002 thousandths instead of almost .007 and risk case head seperation. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Belted Magnum Head Spacing
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