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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming question!
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<blockquote data-quote="Mikecr" data-source="post: 566567" data-attributes="member: 1521"><p>I don't have either. But I can see the neck of the 375RUM is way longer than the 300RUM, so I assume you're talking COW fireforming.</p><p>The shoulders are the same angle & both cases the same length, there is no reason for the brass to shorten more than usual with fireforming.</p><p>There is also no reason for uniformity of neck thickness to change with expansion.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 566567, member: 1521"] I don't have either. But I can see the neck of the 375RUM is way longer than the 300RUM, so I assume you're talking COW fireforming. The shoulders are the same angle & both cases the same length, there is no reason for the brass to shorten more than usual with fireforming. There is also no reason for uniformity of neck thickness to change with expansion. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming question!
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