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Rifles, Reloading, Optics, Equipment
Reloading
7mm RUM case life
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<blockquote data-quote="180pilot" data-source="post: 87277" data-attributes="member: 3897"><p>As I said in first post of this thread,..the headspace has been checked, I have a full set of Manson headspace guages. I have checked the fired brass with RCBS precision mic and cases are stretching .005 (which is in the middle .010 SAMMI allows, 2.4742/2.4842), from FL sized, and factory loads. In this case, I think the gases escaping the crack in the case reduced the pressure needed to seal the neck. It has never happened before except with the case breech. Funny, there was no blackening or residue at the dent? Bullets are seated to fit magazine, same as factory length. Some bullets were pulled and reloaded without re-neck sizing, could reduce bullet grip somewhat. I'm neck sizing only from here out. And since I'ts a Savage, I can reset the headspace of barrel if needed also, to reduce stretch of new brass too.</p></blockquote><p></p>
[QUOTE="180pilot, post: 87277, member: 3897"] As I said in first post of this thread,..the headspace has been checked, I have a full set of Manson headspace guages. I have checked the fired brass with RCBS precision mic and cases are stretching .005 (which is in the middle .010 SAMMI allows, 2.4742/2.4842), from FL sized, and factory loads. In this case, I think the gases escaping the crack in the case reduced the pressure needed to seal the neck. It has never happened before except with the case breech. Funny, there was no blackening or residue at the dent? Bullets are seated to fit magazine, same as factory length. Some bullets were pulled and reloaded without re-neck sizing, could reduce bullet grip somewhat. I'm neck sizing only from here out. And since I'ts a Savage, I can reset the headspace of barrel if needed also, to reduce stretch of new brass too. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm RUM case life
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