Issue with Murrays Firing PIn - SKS !! Anyone else had this happen?

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schissler

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Bought some murrays firing pins for mine and a friends SKS, Mine is a '52 unissued russian and his is a chinese sks around the same year.

we put the firing pin in his first and put around 100 rounds through it then it started to have issue. It would not fire.

What we found is that it was popping the primers out and they were getting stuck in the firing pin hole in the bolt....


I then installed the spring loaded pin into my russian and the same thing is happening, after about 75-100 rounds the firing pin hole is full of what i assume are peice of the primers ??


before the pin change they worked mint never had a single misfire with it using surplus ammo...
 
It sounds like the new pin is extending to far out of the bolt face. If it worked fine with the original pin i would switch back to it from now on and just keep it clean.

Edit: after re-reading your post i wasn't clear, is the firing pin popping a hole into the primer and pieces of the ruined primer getting stuck as it comes back, or is it ripping out the entire primer and trying to drag it back with it?
 
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1. His chinese sks wouldn't be anywhere around 1952 as the "type 56" started production in 56, and most of the stock being sold is late 60s 70s vintage.

2) Take the "new" firing pins out. Run break cleaner through the firing pin holes in the bolt to ensure all cosmo is out if you haven't already. Put the original pins that came with the gun back in and solve the problem.

If you keep your spring-less firing pins clean you won't get slam fires. The slam fires are caused by the uncleaned cosmo jamming things up when a hot gun melts it and it cools holding the firing pin forward.

Never had a problem ever with a free float sks fire pin on any of my sks ever slam firing. Just gotta make sure they are cleaned properly the first time and then mantained after.
 
Looking at his website, their new "bulletproof" pin version requires modification to the bolt and carrier.
http://www.murraysguns.com/sksown.htm

Quickest fix is as mentioned above.
"If it worked fine with the original pin i would switch back to it from now on and just keep it clean."
 
I had the same problem a couple years ago. The Murray pin is slimmer that combined with a conicle or volcano effect at the FP hole on the bolt face. This creates a nice cookie cutter. You can carefully clean up the FP hole check Murray's web site for the info.
http://www.murraysguns.com/poppedprimers.htm

It's all well and good. However, you will/may still have FTF's with the Murray pin if you are shooting surplus ammo. I tried all kinds of solutions to the pin and had several discussions with the man himself via SKSBoards. I haven't looked at the new pin and mods as yet to see if it will resolve the issue. IF you clean the FP channel and pin everytime, check for the rattle you shouldn't have any problems IF you shoot Surplus ammo. If you shoot commercial ammo you may want to use the Murray Pin. Just clean up the bolt face first.

Once the primer pops, the spring gets fried, pieces of primer get in the action and a little chunk of metal can prevent the bolt and carrier from properly activating the disconnector so "No click, No boom". Also the FTF's with the Murray pin will fire if rechambered and fired again.
 
Keep the floating pin and just pull it apart after each shooting session. It takes 3 minutes to do it and will ensure you gun always shoots fine. If you keep it clean, you will never have an issue with a slamfire. If you do not want to clean your guns, don't shoot them!

:)
 
Dad003 said:
personally my 1950 sks have it already because in that time they were no free floating fire pin !
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And no promise of having a chrome lined bore. Original barrels from 49 to sometime in 51 where not chrome lined. Refurbs may have gotten chrome lined bores, but not always.

Either way, proper cleaning makes chrome/non-chrome, spring loaded FP/springless FP mute. Take care of your gun and it will work just as intended.
 
fenceline said:
And no promise of having a chrome lined bore. Original barrels from 49 to sometime in 51 where not chrome lined. Refurbs may have gotten chrome lined bores, but not always.

Either way, proper cleaning makes chrome/non-chrome, spring loaded FP/springless FP mute. Take care of your gun and it will work just as intended.
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true but cleaning is not a issue for me , i prefer to shoot the cheap corrosive and shoot more for the same price as the non-corrosive
 
In my book, nothing justify spending money on a Murray's pin,except if you have a early russian that broke his firing pin since original spring loaded firing pin for russian 1949-1951 can be very hard to get. I am not sure if original spring loaded firing pin are more prone to breakage,i saw 2 having the head snaped off but never heard of a broken free floating one yet. Point is, SKS are fine with the factory pin, just keep it clean.
Joce
 
take the spring loaded pins remove them and put them somewhere safe. Strip the bolt and make sure its spotless clean inside. Put the original pins back in. Enjoy a reliable sks.
 
I was paranoid about slam fires and was considering buying a Murray's a while back. Seemed like a good idea . I did some reading and found out many people have problems with them. I just keep the pin clean, make sure it rattles around every time I put the back together. I have had no issues with the stock pin. Another thing I do is make sure the gun is pointing down range every time I release the bolt.
 
welder01 said:
I was paranoid about slam fires and was considering buying a Murray's a while back. Seemed like a good idea . I did some reading and found out many people have problems with them. I just keep the pin clean, make sure it rattles around every time I put the back together. I have had no issues with the stock pin. Another thing I do is make sure the gun is pointing down range every time I release the bolt.
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+1 +1 +1
 
Thanks for the replied guys.

We tried machining our own "murrays" firing pins from the factory ones and they didnt quite work out as planned haha....i no longer have them, thats why the murrays are still in there.

there has not been any cosmo in the gun since they were bought. they have had over 500 rounds each through them before with the old pins.

i dont think its pulling the whole primer out, (i couldnt find any empty casings that it happened to to investigate) its just filling the hole with little peices until it jammed up. next time it happens i will try to take a picture.


Its so true if it aint broke dont fix it!
 
welder01 said:
I was paranoid about slam fires and was considering buying a Murray's a while back. Seemed like a good idea . I did some reading and found out many people have problems with them. I just keep the pin clean, make sure it rattles around every time I put the back together. I have had no issues with the stock pin. Another thing I do is make sure the gun is pointing down range every time I release the bolt.
Click to expand...

Why slam fires are fun :p

You just open it up take the bolt out rattle it and tada you see if it works or not by the noise alone. Just do that to test it and only load it when your ready to fire and it will never be a problem.
 
Why is it that the SKS's seem to get the most paranoia about the free floating firing pin? Is it just a lack of proper cleaning and maintenance that created a faux slam fire problem that got out of control? I rarely hear of people worrying about free floating in other similar rifles.
 
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