Norinco NP762 not striking primer hard enough

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Dodder7

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Hi everybody,

Just as the title says, my np762 isn't always firing the round on the first trigger pull. Sometimes it takes 2 hits from the firing pin to get the round to fire. I have checked after each trigger pull, and the primer is partially dented after the first trigger pull but not fired. I am using surplus ammo and the firearm was cleaned thoroughly before use.

My question is,

Can I get the firing pin to protrude a bit more and strike the primer harder? Or is there any way to get each round fired on the first trigger pull.


Cheers!
 
I had one when they were first brought in and it had the same issue and I believe the surplus ammo has a harder primer. Try some different ammo in it.
 
Many parts for the Sig P226 are interchangeable with the NP762. I replaced the Hammer Spring with the Wolff 28 lb. (P/N 28328) which is the strongest they sell, and it had no effect. About 50% of the milsurp ammo still required a second strike to fire. I moved to commercial ammo.
 
Which spring determines how hard the firing pin will hit the primer ?

I think that the mainspring, not the firing pin spring, is a bigger factor.
The mainspring provides energy to the hammer and a stronger spring will
result in a stronger firing pin strike.

The firing pin spring , IMO, softens the blow and returns the spring back into the slide. Therefore
a stronger firing pin spring may worsen the problem of light strikes.

Now to qualify my post. I am at home in the middle of the flu and my brain may be
thinking backward son if I am wrong, I have an excuse.
 
I only ever used commercial non corrosive ammo in mine when I had it. Worked every time. I'm thinking you have an ammo problem rather than a gun problem.
 
sailor723 said:
I only ever used commercial non corrosive ammo in mine when I had it. Worked every time. I'm thinking you have an ammo problem rather than a gun problem.
Click to expand...

If the gun often doesn't work with the most common ammunition you are likely to find then that is a gun problem not an ammo problem. The common theme of light strikes is one of two major reasons why I never bothered buying an NP762. The other was a complete lack of extra mags. The new batch solved the mag issue but not the light strikes it seems.
 
I was fearing that it may be the ammo itself after some googling. Seems like hard primers are a thing. Bought a fair amount so I guess cocking the hammer back for a second go is my only option
 
I'm glad I waited to hear some feed back before I ordered one. I have an NP58, and it is a really nice gun, and shoots well (after I did a lot of grinding and polishing of the feed ramp). The NP762 would have fit into my shooting collection for our outdoor range. I don't shoot my other pistols outdoors as I reload, and I want to keep my brass. I will still consider one if a good solution is found.
 
Wolf spring kits designed for old style Sigs with the metal receptor will work in these. Upgrading the firing pin spring to a higher value will have the opposite effect of helping with light strikes. You'll want to upgrade the main spring if you're looking to overcome particularly harder milsurp primers.

I had very few light strikes burning through two cases of 7.62x25 ammo with my CanadaAmmo 1'st import P762. I upgraded the main spring (in the handle) and trigger spring with a Wolf kit to actually lighten the pull in double action. Which it did but, I began to experience the odd light strike after the lighter mainspring was installed. It's a single/double action pistol so light strikes aren't the worst thing in the world. Just pull the trigger again.

Since these are made by Norinco I'd probably just order a new standard Sig mainspring from Wolf if you wanted to finish off that crate. While you're there, buy a lighter one for after the crate is done and really get that trigger nice for regular factory stuff. Or you may get lucky with your next crate having less hard primers as both of mine shot fine with my lighter mainspring for the most part.
 
I had the same pistol. In the time I owned it I also had that problem so I thought. It shot russian and chinese surplus ammo no problem, but the other surpluss ammo (can't remember Polish maybe?) did exactly what your saying. It was as bad as 1 in 3 (or) 1 in 4 would not fire. Everything else worked flawless. I'd experement with a few boxes of mixed brands and see if your getting the same results. Thats what i did.
 
MuthaFunk said:
Wolf spring kits designed for old style Sigs with the metal receptor will work in these. Upgrading the firing pin spring to a higher value will have the opposite effect of helping with light strikes. You'll want to upgrade the main spring if you're looking to overcome particularly harder milsurp primers.

I had very few light strikes burning through two cases of 7.62x25 ammo with my CanadaAmmo 1'st import P762. I upgraded the main spring (in the handle) and trigger spring with a Wolf kit to actually lighten the pull in double action. Which it did but, I began to experience the odd light strike after the lighter mainspring was installed. It's a single/double action pistol so light strikes aren't the worst thing in the world. Just pull the trigger again.

Since these are made by Norinco I'd probably just order a new standard Sig mainspring from Wolf if you wanted to finish off that crate. While you're there, buy a lighter one for after the crate is done and really get that trigger nice for regular factory stuff. Or you may get lucky with your next crate having less hard primers as both of mine shot fine with my lighter mainspring for the most part.
Click to expand...

Thanks for answering! I'm going to look into sourcing a Wolf spring kit for the Sig P226 and see how that goes. Hopefully that solves the issue.
I really just want a reliable handgun that goes bang every time I pull the trigger
 
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