So uuuuh how does this get undone?

[GeoDudeFlorida]

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.

I have only reloaded Norma and Lapua in the Russian infantry round. The M91 series rifles and their relations - a.k.a. "Mosin-Nagants " - are capable of remarkable accuracy if the barrel isn't rotten and they're loaded and bedded in a good solid stock properly. But, I was only giving advice based on what my experience tells me - too deeply seated primers are not good - and I'm not an expert on handloading for overly deep primer pockets, cracked necks, corroded brass or any of the other things that are perfectly fine for some folks - just not for me. So, the usual caveats: Ask your doctor if its right for you, YMMV, EPA average only, some people will disagree - they always do.

 

[daniel craig]

I have only reloaded Norma and Lapua in the Russian infantry round. The M91 series rifles and their relations - a.k.a. "Mosin-Nagants " - are capable of remarkable accuracy if the barrel isn't rotten and they're loaded and bedded in a good solid stock properly. But, I was only giving advice based on what my experience tells me - too deeply seated primers are not good - and I'm not an expert on handloading for overly deep primer pockets, cracked necks, corroded brass or any of the other things that are perfectly fine for some folks - just not for me. So, the usual caveats: Ask your doctor if its right for you, YMMV, EPA average only, some people will disagree - they always do.

At this point I think I feel safer shooting it than trying to mess around with punching out a live primer.

 

[mdi]

I'd think a large pistol primer was seated in a large rifle application (7.62x54r) in "normally' a bit deeper primer pocket. I saw some reports ppu and some European brass having slightly deeper pockets but with LR primers not a problem. Large pistol primers are .008" shorter than large rifle primers and add that to slightly deeper pockets can lead to "too deeply seated" primers. I'd load it and try it...

 

[243winxb]

Some posts above & Googe thinks the deep seated primers are not an issue. Just difference in brass. PPU vs Winchester.
The CIP doesnt seem to list primer & pocket specifications?

 

[243winxb]

It’s mixed PPU and S&b

Correction: happens to 7 out of out of 47 casings. .

Different brass, different pocket depth?

 

[daniel craig]

Double checked. All the S&B are good the deep pockets are all Privi

 

[Jim Bowie]

Seems like the Privi are a little looser as well , no ?

 

[RetiredUSNChief]

Correction: happens to 7 out of out of 47 casings. These might just be defective brass.

Not a reloader, but this seems to be a pretty high percentage of defects.

I don't suppose you could make a go/no-go depth gauge to check the brass?

Nothing complicated...I'm thinking a simple brass pin (maybe even a nail of the right diameter) that you can bevel the tip on to fit the primer pocket. Mark, stain, or paint the shaft of the pin to the spot wher the pocket should be no deeper. If the pin enters the pocket deeper than that mark, toss it.

 

[Jim Bowie]

The easy way to get that primer out is to take it outside chamber it in your rifle and pop it off then come inside de-prime and check the pocket. This way you get to check if the brass Chambers in your rifle you get to check if you're firing pin will set off that primer you'll learn all sorts of things

 

[daniel craig]

The easy way to get that primer out is to take it outside chamber it in your rifle and pop it off then come inside de-prime and check the pocket. This way you get to check if the brass Chambers in your rifle you get to check if you're firing pin will set off that primer you'll learn all sorts of things

I'm sure the apartment complex fellows would love that lol

 

[GeoDudeFlorida]

I'm sure the apartment complex fellows would love that lol

Bah humbug! Just tell them it was an M80. Who doesn't like firecrackers?

 

[SamT1]

I'm sure the apartment complex fellows would love that lol

If I recall it’s not even loud enough a neighbor would hear it if you let it off in the house.

 

[Soonerpesek]

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.

I know that they are 2 entirely different cartridges, and I have not messed with 7.62x54r in any case brand,
but I have loaded many 7.7x58 Arisaka PPU brass with no issues with the primer pocket.
Why would the 7.62x54r be different...?

This is a legit question----I am NOT trying to be a smart A**....

 

[Swampman]

Do you know the history of that particular assortment of brass?

If it's range pickup I wonder whether someone might have used a maladjusted primer pocket uniformer and cut the pockets too deep?

I've loaded hundreds of Prvi 7.62x54R brass and never had a primer seat anywhere near that deep. I use CCI #34 primers and seat them until they bottom out in the pocket.

 

[kidneyboy]

When in doubt, throw it out.
Even in these times.

 

[Hooda Thunkit]

Why would the 7.62x54r be different...?

This is a legit question----I am NOT trying to be a smart A**

No idea. I have never played with Arisaka brass of any flavor. Come to that, I've never fired one.

The only thing I can offer is my experience. I even have new, unfired (still in the sealed bag when I bought it ) PPU brass that has a deeper primer pocket than SAAMI specs. Apparently from the factory.

I never realized the pockets were out of spec until I purchased a uniformer.

Every piece of 7.62x54r PPU brass I possess is out of SAAMI specs in the primer pocket. I still shoot it with no problems.

 

[Soonerpesek]

No idea. I have never played with Arisaka brass of any flavor. Come to that, I've never fired one.

The only thing I can offer is my experience. I even have new, unfired (still in the sealed bag when I bought it ) PPU brass that has a deeper primer pocket than SAAMI specs. Apparently from the factory.

I never realized the pockets were out of spec until I purchased a uniformer.

Every piece of 7.62x54r PPU brass I possess is out of SAAMI specs in the primer pocket. I still shoot it with no problems.

Very interesting.......Thanks for the input.

 

[Paul R Zartman]

I pop them off all the time in the house, don't even need ear protection, not bad at all...

 

[daniel craig]

Do you know the history of that particular assortment of brass?

If it's range pickup I wonder whether someone might have used a maladjusted primer pocket uniformer and cut the pockets too deep?

I've loaded hundreds of Prvi 7.62x54R brass and never had a primer seat anywhere near that deep. I use CCI #34 primers and seat them until they bottom out in the pocket.

It was a formerly 180 grain hunting round. I bought the box and kept the brass after I shot it.

 

[daniel craig]

No idea. I have never played with Arisaka brass of any flavor. Come to that, I've never fired one.

The only thing I can offer is my experience. I even have new, unfired (still in the sealed bag when I bought it ) PPU brass that has a deeper primer pocket than SAAMI specs. Apparently from the factory.

I never realized the pockets were out of spec until I purchased a uniformer.

Every piece of 7.62x54r PPU brass I possess is out of SAAMI specs in the primer pocket. I still shoot it with no problems.

Maybe international specs are different idk?

 

[daniel craig]

That’s a factory PPU. I have about 10. Apparently they just have deep primer pockets. I wonder if it’s a European thing or a military contract thing.

 

[length_of_pull_1]

Just pop those babies out. They will come right out if you run them through your resizing die. It'll make you a little nervous the first few cases, but go slowly and take them out. If they aren't large pistol primers just use your sense of feel to reseat them. Don't use lpp s in a rifle

 

[Hooda Thunkit]

Apparently they just have deep primer pockets.

I'm not normally one to say 'I told you so...', but, ahem.... I did.

Just shoot them. The Mosin design firing pin sticks out about 3 inches anyway.

 

[daniel craig]

I'm not normally one to say 'I told you so...', but, ahem.... I did.

Just shoot them. The Mosin design firing pin sticks out about 3 inches anyway.

Heheh you have the right to say so.