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Rifles, Reloading, Optics, Equipment
Reloading
CCI 250 mag primers not igniting?
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<blockquote data-quote="Pdvdh" data-source="post: 348822" data-attributes="member: 4191"><p>Sorry if my ideas seemed overly simple. Those are some issues I myself have experienced or seen others experience leading to primer ignition failures.</p><p></p><p>The information I've seen on primer seating is that they should be seated 0.004" below the head of the cases. That's what the folks that sell primer pocket uniformers state when they sell their tools. So you're about twice as deep as their specification.</p><p></p><p>Did you uniform your primer pockets? Possibly too deeply? Either that or the cases came with overly deep primer pockets, or the primers aren't as tall as they should be. That's the only thing that appears out of the ordinary from what you've shared.</p><p></p><p><u>Are the dud primers indented properly</u>? Sufficient to expect ignition?</p><p></p><p>Quick test on the primers is grab another brand and pop some off with just the primers seated on an empty shell casing. Maybe you've got a bad batch of primers. Or CCI labeled some large pisol primers as large magnum rifle primers. Large pistol primers are shorter in height than large rifle primers. They'll go in and seat fine but they go in too deeply.</p><p></p><p>Got access to any other large rifle or large rifle magnum primers? That's what I'd try next. If another brand of primer ignites 100% then you've evidently received some defective CCIs. AKA human error.</p><p></p><p>If the dud primers <strong>are</strong> indented sufficient for ignition and another brand of primers fails to ignite, then it's time to take the firing pin mechanism out of the bolt and examine the spring, firing pin, and assembly.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 348822, member: 4191"] Sorry if my ideas seemed overly simple. Those are some issues I myself have experienced or seen others experience leading to primer ignition failures. The information I've seen on primer seating is that they should be seated 0.004" below the head of the cases. That's what the folks that sell primer pocket uniformers state when they sell their tools. So you're about twice as deep as their specification. Did you uniform your primer pockets? Possibly too deeply? Either that or the cases came with overly deep primer pockets, or the primers aren't as tall as they should be. That's the only thing that appears out of the ordinary from what you've shared. [U]Are the dud primers indented properly[/U]? Sufficient to expect ignition? Quick test on the primers is grab another brand and pop some off with just the primers seated on an empty shell casing. Maybe you've got a bad batch of primers. Or CCI labeled some large pisol primers as large magnum rifle primers. Large pistol primers are shorter in height than large rifle primers. They'll go in and seat fine but they go in too deeply. Got access to any other large rifle or large rifle magnum primers? That's what I'd try next. If another brand of primer ignites 100% then you've evidently received some defective CCIs. AKA human error. If the dud primers [B]are[/B] indented sufficient for ignition and another brand of primers fails to ignite, then it's time to take the firing pin mechanism out of the bolt and examine the spring, firing pin, and assembly. [/QUOTE]
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CCI 250 mag primers not igniting?
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