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Rifles, Reloading, Optics, Equipment
Gunsmithing
Case exploded today !!
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<blockquote data-quote="NesikaChad" data-source="post: 265868" data-attributes="member: 7449"><p>Looking at your primers you are definitely seeing some pressure signs.</p><p></p><p>No they aren't flattened but they are cratering. I too doubt its a headspace issue because typically in those situations you see primers flattened pretty bad and the case web showing distension (stretching)</p><p></p><p>The striker drives the case forward, the case shoulders up and then fires, pressure builds and the case gets blown against the chamber walls. The primer begins to poop out the back of the case (path of least resistance) until it slams into the bolt face, the head of the case isn't far behind. Since the bulk of the case is against the chamber walls and locked solid the web area (unsupported case portion) has to stretch to allow for the case head to contact the bolt face. </p><p></p><p>This is what leads to case head splits and this is almost always a rupture that follows the circumference of the cartridge case.</p><p></p><p>Your failure doesn't really appear to follow this. It looks like a gross pressure issue or just a freak catastrophic case failure.</p></blockquote><p></p>
[QUOTE="NesikaChad, post: 265868, member: 7449"] Looking at your primers you are definitely seeing some pressure signs. No they aren't flattened but they are cratering. I too doubt its a headspace issue because typically in those situations you see primers flattened pretty bad and the case web showing distension (stretching) The striker drives the case forward, the case shoulders up and then fires, pressure builds and the case gets blown against the chamber walls. The primer begins to poop out the back of the case (path of least resistance) until it slams into the bolt face, the head of the case isn't far behind. Since the bulk of the case is against the chamber walls and locked solid the web area (unsupported case portion) has to stretch to allow for the case head to contact the bolt face. This is what leads to case head splits and this is almost always a rupture that follows the circumference of the cartridge case. Your failure doesn't really appear to follow this. It looks like a gross pressure issue or just a freak catastrophic case failure. [/QUOTE]
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Case exploded today !!
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