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Preimer pocket prep

 
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  #1  
Old 10-01-2008, 02:12 PM
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Preimer pocket prep

When uniforming primer pockets for large rifle cases; what depth should they be uniformed to?
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Old 10-01-2008, 02:56 PM
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Re: Preimer pocket prep

The uniformer should automatically stop at the correct depth, as it will have a shoulder on it. There is a SAAMI spec, but I can't remember what it is.

AJ
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Old 10-01-2008, 04:41 PM
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Re: Primer pocket prep

SAAMI spec for large rifle primer depth is 0.132 maximum, 0.125 minimum.
.
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Old 10-01-2008, 04:45 PM
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Re: Preimer pocket prep

So the set screw in this thing is must be for changing the blade when it gets dull.

I measured it and it falls in the upper 3/4 of the spec. I also just tried it on a few cases and I'm a little shocked at the amount of material it takes out as well as the differing amounts between cases. Thanks for the help!
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Last edited by jmason; 10-01-2008 at 05:24 PM. Reason: add info
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Old 10-01-2008, 05:58 PM
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Update

I just noticed I misspelled "primer".

Report:

I made a couple cases a little too uniform! The primers fall back out! Might be from some high pressure loading before. That's not the first time that's happened. I measured the blade (it protrudes less than sammi max) so I know it can't cut more than the saami depth out but a few primers look low. Hopefully I don't get misfires.

Is it the general consensus that if the primer stays seated that all is well?
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Old 10-01-2008, 09:44 PM
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Re: Primer pocket prep

Quote:
Originally Posted by jmason View Post
So the set screw in this thing is must be for changing the blade when it gets dull.
And for re-setting the cutting depth when it self-adjusts. RCBS?
.
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Old 10-01-2008, 09:49 PM
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Re: Update

Your primer uniforming tool will remove excess brass and square the bottom of the pocket. The primers will be seated uniformly below the base and flush against the bottom of the pocket. It should not cause loose primer pockets, but that is usually attributed to high pressure as you stated and or soft brass.

Last edited by Charles B; 10-01-2008 at 09:50 PM. Reason: spelling
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