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Rifles, Reloading, Optics, Equipment
Reloading
Setting up dies "properly"
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<blockquote data-quote="J E Custom" data-source="post: 1920033" data-attributes="member: 2736"><p>Belted cases were designed to chamber in any rifle and in dirty chambers for dangerous game hunting to assure the cartridge chambers every time. The belt was necessary to hold the head space to safe tolerances while allowing the case body to chamber in the worst conditions. Brass life meant nothing, and the cases can handle the case stretch the first time.</p><p></p><p>Every time you full size a belted case to SAMMI spec, it has to stretch this amount every time and case head separation soon follows depending on the brass and chamber size. You can do a minimum full length size with the full length sizing dies until the cartridge chambers without bumping the shoulder and increase the case life and the risk of case head separation.</p><p></p><p>For normal use, most people use the shoulder to head space on after the first firing except when hunting dangerous game where the belted case offers an extra margin of safety.</p><p></p><p>On shouldered cases, case head separation is basically the same problem but less common. Each chamber is different and sizing to fit your chamber and holding head space to a minimum will normally prevent this.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1920033, member: 2736"] Belted cases were designed to chamber in any rifle and in dirty chambers for dangerous game hunting to assure the cartridge chambers every time. The belt was necessary to hold the head space to safe tolerances while allowing the case body to chamber in the worst conditions. Brass life meant nothing, and the cases can handle the case stretch the first time. Every time you full size a belted case to SAMMI spec, it has to stretch this amount every time and case head separation soon follows depending on the brass and chamber size. You can do a minimum full length size with the full length sizing dies until the cartridge chambers without bumping the shoulder and increase the case life and the risk of case head separation. For normal use, most people use the shoulder to head space on after the first firing except when hunting dangerous game where the belted case offers an extra margin of safety. On shouldered cases, case head separation is basically the same problem but less common. Each chamber is different and sizing to fit your chamber and holding head space to a minimum will normally prevent this. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Setting up dies "properly"
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