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Rifles, Reloading, Optics, Equipment
Reloading
Pressure Signs
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<blockquote data-quote="MagnumManiac" data-source="post: 2294656" data-attributes="member: 10755"><p>I can use 3 primers in the same cases with the same loads and have 3 different primer appearances.</p><p>Another thing, even if a primer fills the primer pocket and has a radiused edge, does not mean excessive pressure.</p><p>First sign of excessive pressure almost exclusively is ejector marks, sometimes a cratered primer exhibits first, but this is a mechanical indication from the bolt, then hard bolt lift with accompanying above symptoms and then all symptoms and a locked solid bolt with a case head fused to the bolt face.</p><p>The term "Watch for flattened primers" was coined when primers were concave when made, not like today's flat face with radiused edges.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2294656, member: 10755"] I can use 3 primers in the same cases with the same loads and have 3 different primer appearances. Another thing, even if a primer fills the primer pocket and has a radiused edge, does not mean excessive pressure. First sign of excessive pressure almost exclusively is ejector marks, sometimes a cratered primer exhibits first, but this is a mechanical indication from the bolt, then hard bolt lift with accompanying above symptoms and then all symptoms and a locked solid bolt with a case head fused to the bolt face. The term “Watch for flattened primers” was coined when primers were concave when made, not like today’s flat face with radiused edges. Cheers. [/QUOTE]
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