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Rifles, Reloading, Optics, Equipment
Reloading
primer cratering 7mm ultra mag
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<blockquote data-quote="Fiftydriver" data-source="post: 180372" data-attributes="member: 10"><p>The comparitiively weak force holding the firing pin forward by the spring is no match for the pressure generated by the chamber pressure of the round.</p><p> </p><p>As such, its simply a matter of surface area over the unsupported firing pin hole that will result in cratering, that is unless there is a legitimate over pressure situation but that will be seen along with other high pressure signs as well.</p><p> </p><p>Its to bad that the industry does not set a standard pin diameter of 0.062" and a firing pin hole diameter to be no larger then 0.065" in diameter. Then there would be none of these cratering problems unless you really were running the pressures to high.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 180372, member: 10"] The comparitiively weak force holding the firing pin forward by the spring is no match for the pressure generated by the chamber pressure of the round. As such, its simply a matter of surface area over the unsupported firing pin hole that will result in cratering, that is unless there is a legitimate over pressure situation but that will be seen along with other high pressure signs as well. Its to bad that the industry does not set a standard pin diameter of 0.062" and a firing pin hole diameter to be no larger then 0.065" in diameter. Then there would be none of these cratering problems unless you really were running the pressures to high. Kirby Allen(50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
primer cratering 7mm ultra mag
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