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"Yugo" Brass Cases

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"Yugo" Brass Cases

Postby Grindl » Fri Oct 02, 2015 10:29 am

I recently purchased a bunch of Brass cases from a supplier ; and there was the usual mix of Win, PPU , and even a couple of Norma , but there was also ten cases w/a head-stamp of "nny". A little research told me they were Yugoslavian , and originally equipped with a Berdan primer . They've already been converted to Boxer primer pockets so I can reload them...They appear to be very nice cases , But..Yup , there's always a "But"

The questions are : Is this a good usable case to re-load , and is there anything specific to look for on these cases that might create a problem , beyond normal case inspection ? If anyone has any knowledge or experience with these cases , I'd appreciate hearing from you . Thanks .
If not me.....Who ?
If not now ....When ?
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Re: "Yugo" Brass Cases

Postby farmerboy78 » Fri Oct 02, 2015 1:25 pm

Nny makes boxer primed ammo! Does it have one or two holes in the primer pocket? One hole is boxer
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Re: "Yugo" Brass Cases

Postby Grindl » Mon Oct 05, 2015 1:35 pm

I wondered about that , too . So I got out the trusty Opti-visor and you can clearly see what is left of two small holes on the outside edge of the center flash hole . It appears that someone "converted" these cases from Berdan to Boxer. Every one of these cases is nearly identical in that they have a single hole in the center ; ala a Boxer primer , but they also have the remains of two small holes on center-line , 180 apart , like a Berdan primer case .

This is what makes me think they were "converted" cases , and led me to ask about safety issues cause they look great otherwise.
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Re: "Yugo" Brass Cases

Postby farmerboy78 » Mon Oct 05, 2015 5:35 pm

I would worry about reloading those... Berdan primers are a different od and the extra openings in the flash area may cause a rearward over pressure that could push the primer out and eject gases toward you
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Re: "Yugo" Brass Cases

Postby Grindl » Wed Oct 07, 2015 9:49 am

Makes good sense . Appreciate the input & it's not worth the risk of damaging the rifle . I'll file them in the "round" file. Thanks.
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Re: "Yugo" Brass Cases

Postby Marauder 1 » Wed Nov 11, 2015 1:46 am

Could you post some photos? I'd like to see what they did. I agree it's not a good practice to reload converted Berdan brass, be safe, not sorry.

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Re: "Yugo" Brass Cases

Postby Shepard » Wed Nov 11, 2015 9:02 am

I have Russian target ammunition from 1953 - 1959 - 1971. They are all brass cased. The 2 early ones came in tin boxes with soldered seams on the lid. The older brass "53" I've had lots of primer blowouts. I know from experience that the older brass is frailer then the newer. How old are the NNY cases? A word to the wise, PPU brass is cheap and should get you a good 5-6 loads to the case. Don't reload anything that is even close to questionable. I would be very careful with the Berdan to Boxer primer conversions. I've seen conversions with way to large of a flash port. I have a K&M flash hole drill that cuts the flash hole to an exact diameter from the inside. .090 in diameter isn't very large. Its part of precision reloading -- making all cases have the same size flash hole is just as important as trimming the case length.

http://www.grafs.com/retail/catalog/pro ... ctId/12651
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Re: "Yugo" Brass Cases

Postby Grindl » Wed Nov 18, 2015 2:42 pm

Sorry , Mark . I tossed them after reading Farmers response . If I come across any more ,I'll do pics and post it for you .

They immediately caught my attention because the primer hole just did not look "right" ; and it's a blessing to have a group of people to go to , that are knowledgeable and willing to freely share information on anything that anyone asks . :clap: :clap: :clap:
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