daniel craig
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Set the primer too deeply without even trying.
So uuuuh how does this get undone?
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Aletheia
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Load something in it an shoot it. Then try to find out how that happened, and likely discard the case.
Soonerpesek
Member
Large Pistol in place of Large Rifle....?
Are all the primer pockets that deep...?
Are all the primer pockets that deep...?
dredd
Member
I do not believe it was your error.
That has to be an overly deep primer pocket in my opinion.
You can try to finish loading it and see if it will fire.
I don't think it is worth the experiment if that is the only case.
I would just move on.
You can gently push the primer out if you want to save it.
That has to be an overly deep primer pocket in my opinion.
You can try to finish loading it and see if it will fire.
I don't think it is worth the experiment if that is the only case.
I would just move on.
You can gently push the primer out if you want to save it.
daniel craig
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Correction: happens to 7 out of out of 47 casings. These might just be defective brass.
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AJC1
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They sell primer pocket guages mostly used for diameter but they can also check depth. It's better to find out the brass is trash than think a tray of good primers is junk.
Carl N. Brown
Member
Either a shallow primer ( large pistol primer in a large rifle picket ) or a deeeep pocket ( if that's a large rifle primer ).
PPU 7.62X54R. PPU brass has tended to be standard size in my limited experience.
PPU 7.62X54R. PPU brass has tended to be standard size in my limited experience.
1976B.L.Johns.
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Try saying............"Bad batch of brass" three times fast!
Sorry, couldn't help it...............
daniel craig
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It’s mixed PPU and S&b
daniel craig
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Yep. That’s why I’m not too worried.
Mark_Mark
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It’s a Mosin! it’s been through 2 world worlds and turned into a sportier hunting rifle.
entropy
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By firing it. You shouldn't need to adjust your Mosin's firing pin.
WestKentucky
Member
I’m assuming that the brass has already been fired. If the pockets are that deep I would suspect them to be weak and as such I would load them pretty low pressure if I loaded them at all. Most likely I would just trash them and move on.
243winxb
Member
The web area may be very thin? Dangerous to fire.
The primer should not be more then .008" below the case head.
The primer should not be more then .008" below the case head.
Hondo 60
Member
Yup, that's waaaayyy to deep.
You can try to shoot it, but that might even too deep for your firing pin.
Jim Watson
Member
I once had some .25-06 with primer pockets too deep.
I could seat a primer out of reach of the Ruger 77 firing pin.
I adjusted my hand seater to set them flush and they fired even with the anvil legs not touching the bottom of the pocket, but accuracy was indifferent.
I could seat a primer out of reach of the Ruger 77 firing pin.
I adjusted my hand seater to set them flush and they fired even with the anvil legs not touching the bottom of the pocket, but accuracy was indifferent.
FROGO207
Member
Sounds like out of spec brass to me. My calipers can measure the depth of the pocket by using the base of them. You might be able to measure those and compare to regular brass. You can save the primers if you decap slowly with even pressure.
Hooda Thunkit
Member
Shoot them.
In my experience, 7.62x54r PPU (NNY) brass is like that: primer pockets are very deep.
I have hundreds of pieces of PPU, they are all deeper than SAAMI specs. A primer pocket uniformer won't touch them.
It's never been a problem with shooting, no matter what Mosin I've fired them in. 3 different 91/30's, 2 different Finn M39's.
Winchester brass has different problems, usually thick necks.
In my experience, 7.62x54r PPU (NNY) brass is like that: primer pockets are very deep.
I have hundreds of pieces of PPU, they are all deeper than SAAMI specs. A primer pocket uniformer won't touch them.
It's never been a problem with shooting, no matter what Mosin I've fired them in. 3 different 91/30's, 2 different Finn M39's.
Winchester brass has different problems, usually thick necks.
daniel craig
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I wonder why? Does PPU use a different type of primer that is larger/taller?
GeoDudeFlorida
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Gentle use of a resizing/decapping die will push the primer out without setting it off - GENTLE being the key phrase there. If you're sure that's a large rifle, not large pistol, primer, then measure the primer pocket depth and - best course, IMO - dispose of any that are out of SAAMI spec'. Don't matter how they do things in Serbia, this is America and the only primers you're going to find (should, anyway) are going to be SAAMI spec'.
7.62x54Rmm cases aren't that rare or pricey and it's not worth damaging a gun or person to save the few pennies a case costs.
entropy
Member
GeoDudeFlorida, read Hoodathunkit's post. Those of us that reload 7.62x54R have all used PPU brass at some point, and the deeper pocket is normal for them. It does not affect firing, except possibly accuracy, but with a Mosin, how would one ever know? They are not unsafe, either. PPU is not the most favored brass for reloading 7.62x54R, (mine's Norma) but it is serviceable. I've reloaded and fired many of them, with loads from light plinking with AK bullets to service light ball equivalent loads. They'd probably be fine with heavy ball equivalent loads also, I've never bother to load them myself.
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