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Rifles, Reloading, Optics, Equipment
Reloading
Primer piercing but weird
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<blockquote data-quote="BallisticsGuy" data-source="post: 1781128" data-attributes="member: 96226"><p>Case volume on the new cases came out as +/-.2gr of water across 10 cases. I'm 99% confident it's nothing to do with volume and it's nothing to do with pressure. I actually did start low and work up and it was core sampling them at a pretty low and known safe charge weight which is why it's such a mystery. Cup thickness hadn't ever bitten me before probably because I almost never use CCI non-magnum SRP's, just 450's, #41's or BR4's.</p><p></p><p></p><p>Kinda thinking it's just stuffing too much firing pin in there. The hole it's making is pretty wide. Excess metal stretch right near that edge is what I'm thinking. A narrower striker is seeming like a necessary item. Thanks for the Gre-Tan tip.</p><p></p><p></p><p>I'm thinking if I want to use non-magnum primers I'm going to need the bolt bushed and striker narrowed. Such is life. I'll just go ahead and switch to CCI magnum SR primers for a double layer of prevention. Preventing DQ's and DNF's is exactly the point.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 1781128, member: 96226"] Case volume on the new cases came out as +/-.2gr of water across 10 cases. I'm 99% confident it's nothing to do with volume and it's nothing to do with pressure. I actually did start low and work up and it was core sampling them at a pretty low and known safe charge weight which is why it's such a mystery. Cup thickness hadn't ever bitten me before probably because I almost never use CCI non-magnum SRP's, just 450's, #41's or BR4's. Kinda thinking it's just stuffing too much firing pin in there. The hole it's making is pretty wide. Excess metal stretch right near that edge is what I'm thinking. A narrower striker is seeming like a necessary item. Thanks for the Gre-Tan tip. I'm thinking if I want to use non-magnum primers I'm going to need the bolt bushed and striker narrowed. Such is life. I'll just go ahead and switch to CCI magnum SR primers for a double layer of prevention. Preventing DQ's and DNF's is exactly the point. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Primer piercing but weird
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