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How much gap should there be between the extractor hook and case rim?

This is a discussion on How much gap should there be between the extractor hook and case rim? within the Ruger Pistols forums, part of the Pistol & Revolver Forum category; I'm seeing some light between the extractor's hook and the case rim on a P90. Should the hook be pretty tight to the case rim ...


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Old February 22nd, 2013, 07:30 PM   #1
 
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How much gap should there be between the extractor hook and case rim?

I'm seeing some light between the extractor's hook and the case rim on a P90. Should the hook be pretty tight to the case rim (with the case pushed against the breach face) or should there be a little play in there. I can push the case to the breach face and then pull it away toward the extractor hook probably about .020" worth or so. Is this normal to have some play there? I know there should be some, but how much is normal?



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Old February 22nd, 2013, 07:59 PM   #2
 
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.020 is within the realm. For most SAAMI go/no go gauges, you are looking at .895-.910 head spacing. That is a .015 difference, and .020 seems to fit within the tolerances of headspace, and rim thickness.
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