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  #1  
Old 12-18-2008, 02:45 PM
Doug Rumbaugh Doug Rumbaugh is offline
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Default Can 7.62x39 IMI brass be formed into 20 PPC...

The dimensions look possible but will it work? Lapua 220 Russian brass is $750/1000 while the IMI 7.62x39 brass is $116/1000. For a PD hunt, seems like the IMI brass would save me a lot of money.

Thanks.
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  #2  
Old 12-18-2008, 04:29 PM
RickC RickC is offline
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Default Redding sells

..form and trim dies to convert 7.62x39 to 6mmPPC and from there you should be able to just neck it down to 20 PPC. I am sure some neck turning would be involved.
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  #3  
Old 12-18-2008, 04:34 PM
iiranger iiranger is offline
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Default Works fine but...

question comes up fairly often... works but 7.62x39 has large primer pocket, the design brass, the 5.45mm stuff, has small rifle primer pocket. Supposedly this is big importance to match shooters. As you indicate, the pasture poodle is not going to know the difference and you can use the bucks saved for gas or gratuities to the land owner or ??? Luck. Happy trails.
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  #4  
Old 12-18-2008, 05:34 PM
Fireball Fireball is offline
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I see it is $166 at Wideners. Where did you see it for $116?

I have often wondered how a small case, with a small 20 caliber hole at the end would behave with a large rifle primer.

If I had a couple of cases I would give it a try. It would make for an interesting experiment.
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  #5  
Old 12-18-2008, 06:25 PM
ray h ray h is offline
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I've formed a good many using W-W brass with no problems. Case volume is less than Lapua when formed so be careful with your fire forming loads. Also the brass won't take the pressure of the Lapua. I did it for the same reason, cheaper than Lapua, my loads may be a 100 or so fps less but won't make much difference to a praire dog.
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  #6  
Old 12-18-2008, 07:15 PM
Fireball Fireball is offline
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Ray, how did the large rifle primer effect things? Did you notice anything different?
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  #7  
Old 12-18-2008, 08:39 PM
Cajun Blake Cajun Blake is offline
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something to consider about brass life and the PPC chamber .......



Ray, was it you or Dave Kessler that formed some PPC brass from WW 7.62x39 brass and the primer pockets opened up after 4-5 firings ??? (I'm having a senior moment and can't remember )

essentially all the tedius case forming work was wasted after several firings b/c the brass could no longer hold primers .. trying to cut costs actually cost more $$$ in the long run

I have no clue about other brands of brass used for a PPC caliber rifle, BUT I do know that Lapua brass will last forever.

Dave Kessler has used the same peice of brass fired more than 40 times in his 17 LN chamber.

cb <*)))>{

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  #8  
Old 12-18-2008, 09:43 PM
Jay T. Jay T. is offline
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http://www.grafs.com/metallic/660

The SSA 6 PPC brass is a lot more than $116/1000, but it's about half of what Lapua costs. It seems fairly consistent (200 pieces I bought). I have a few cases that have been fired 5 times and the primer pockets are still nice and tight. I have only shot it in a 22 PPC, but I wouldn't be afraid to neck it on down for my 20. I don't know that it would pass benchrest standards, but like Ray said, the prairie dogs have yet to question the difference.

Jay T.
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  #9  
Old 12-18-2008, 10:41 PM
Doug Rumbaugh Doug Rumbaugh is offline
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Default Thanks for all the input...

I had a typo on the price, it is $166 per 1000. I am not realy worried about the number of times I can fire it because I want to load up a couple thousand rounds for a PD hunt. I doubt I would go on 4 or 5 hunts so brass life is not really an issue.

For groundhog hunting around here, the 1000 pieces of Lapua 220 Russian I have will last a lifetime.

Maybe I will just load up more .17 Mach IV ammo. I have 2000 pieces of .17 Rem Fireball brass. Anyone know of an available bullet that a 6 twist barrel won't detonate?
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  #10  
Old 12-18-2008, 11:25 PM
Johnly Johnly is offline
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I make my PD 6PPC cases from R-P 7.62x39 cases. I like the R-P cases because they have a small primer pocket.

If you need to borrow a set of forming dies, just let me know.

John
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