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Rifles, Reloading, Optics, Equipment
Reloading
Never seen a primer do this before.....
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<blockquote data-quote="25WSM" data-source="post: 1704572" data-attributes="member: 38048"><p>The firing pin isn't supposed to move. If it did you would blank every primer you shoot. That's why a weak firing pin spring will cause this. If your firing pin went back in When you shoot your primers would not have a dent in them. The pressure would blow the sent back out. That is why a weak pin spring will blank. The pressure on the primer overcomes the resistance of the pin and pushes into the firing pin hole with no support it breaks around the indentation. Yes his loads are warm or his firing pin fit is loose. I've had Remington with loose fit crater on even the lowest loads. So craters are only reliable indicators of pressure when the firing pin fits right. Shep</p></blockquote><p></p>
[QUOTE="25WSM, post: 1704572, member: 38048"] The firing pin isn't supposed to move. If it did you would blank every primer you shoot. That's why a weak firing pin spring will cause this. If your firing pin went back in When you shoot your primers would not have a dent in them. The pressure would blow the sent back out. That is why a weak pin spring will blank. The pressure on the primer overcomes the resistance of the pin and pushes into the firing pin hole with no support it breaks around the indentation. Yes his loads are warm or his firing pin fit is loose. I've had Remington with loose fit crater on even the lowest loads. So craters are only reliable indicators of pressure when the firing pin fits right. Shep [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Never seen a primer do this before.....
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