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Rifles, Reloading, Optics, Equipment
Reloading
Question about Fire Forming 257 bobs into 257 AI
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<blockquote data-quote="Hugnot" data-source="post: 2215523" data-attributes="member: 115658"><p>There is a possibility that your chamber is not spec or excessively large. I would measure the brass where the longitudinal splits occurred and compare it to this:</p><p></p><p>[URL unfurl="true"]https://load-data.nosler.com/load-data/257-roberts-ackley-improved/[/URL]</p><p></p><p>Excessive head space would be indicated by excessively flattened primers, fractures across brass indicating impending head separations or actual head separations. Excessive headspace beyond a certain point would result in fail to fire(s).</p><p></p><p>A proper rechamber job, as noted, would be to set the barrel back one turn and rechamber slightly short to enable cartridge crush fit. Ammo reloading might require a ground down or shortened shell holder to enable chambering rounds easily but having correct or minimum headspace.</p><p></p><p>Check things out real good to avoid trashing good brass. Been there & done that.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2215523, member: 115658"] There is a possibility that your chamber is not spec or excessively large. I would measure the brass where the longitudinal splits occurred and compare it to this: [URL unfurl="true"]https://load-data.nosler.com/load-data/257-roberts-ackley-improved/[/URL] Excessive head space would be indicated by excessively flattened primers, fractures across brass indicating impending head separations or actual head separations. Excessive headspace beyond a certain point would result in fail to fire(s). A proper rechamber job, as noted, would be to set the barrel back one turn and rechamber slightly short to enable cartridge crush fit. Ammo reloading might require a ground down or shortened shell holder to enable chambering rounds easily but having correct or minimum headspace. Check things out real good to avoid trashing good brass. Been there & done that. [/QUOTE]
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Reloading
Question about Fire Forming 257 bobs into 257 AI
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