M14 not always stripping the rounds out of mag

Humour me and take the trigger group from the canam shorty and try it in the chop mod rifle. Then try your norc ammo. Be sure to verify safety checks first though to be sure there is no hammer follow.

Question: when it fails to feed, it is NOT grabbing the round at all?
If so this means the bolt is not going back far enough. You can rule out the spring right off the bat.
MANY things could be causing this that are not related to the ammo being underpowered.
Norinco 147gr FMJ has and will continue to be one of my all around favorites for use in these rifles.

I will try this Friday. Thanks! Could it be a worn op guide rod? I will also switch guide rods Friday.
 
Nope, won't be a worn guide rod. Put a bad spring/guide rod out of your equation, I'd almost guarantee it's not the issue.
 
Swapping the trigger group will be a test to rule out a mag release issue or a bolt/hammer timing issue.
If the problem persists with a different trigger group... We will rule out the above and move onto other possibilities.
 
My experience. Gi OP rod Springs are a couple of pounds stiffer. The Gi springs would not allow my rifles (one is a shorty) to cycle far enough back to strip rounds from the mag - back to Norinco springs and GTG.

Thanks for that post. Mine is doing this with the Norinco ammo. I did a very good cleaning of the gas system but it still short strokes. Still works perfectly with all other ammo.
I'll try the original spring and see.
I would hate to have paid for 1000 rounds(cheap or not) that I can't rely on to work every time.
 
my shorty (done by M14Doc) is having issues with this ammo as well. Sometimes it wont load another round and sometimes it will just misfire, leaving a small dent in the primer......

any idea's would be great since I have 500 rnds of this stuff sitting here!
 
My experience. Gi OP rod Springs are a couple of pounds stiffer. The Gi springs would not allow my rifles (one is a shorty) to cycle far enough back to strip rounds from the mag - back to Norinco springs and GTG.

Thanks! This was my issue. First I tried switching the trigger groups as suggested by M14 Doctor but I guess the specs are a bit off as the trigger group out of one would not work in the other. I swapped the GI spring for the Norinco spring and presto, ten straight mags with the Norinco ammo and no issue! Funny thing is the GI spring is in my CanAm shorty working just fine with the Norinco ammo. So by switching springs I got them both working fine. go figure! This isn't just a maybe because I shot 200 rounds today. Also the shimming and new guide rod must having increased my accuracy because I didn't have any flyers! Very happy and productive day at the range today.
 
my shorty (done by M14Doc) is having issues with this ammo as well. Sometimes it wont load another round and sometimes it will just misfire, leaving a small dent in the primer......

any idea's would be great since I have 500 rnds of this stuff sitting here!

Shoot me an email, my pm box is still full.
 
Thanks! This was my issue. First I tried switching the trigger groups as suggested by M14 Doctor but I guess the specs are a bit off as the trigger group out of one would not work in the other. I swapped the GI spring for the Norinco spring and presto, ten straight mags with the Norinco ammo and no issue!


Once again, unbelievable .
 
my shorty (done by M14Doc) is having issues with this ammo as well. Sometimes it wont load another round and sometimes it will just misfire, leaving a small dent in the primer......

any idea's would be great since I have 500 rnds of this stuff sitting here!

Send me all your ammo for "analysis". If there is a bad one, I will let you know:D
 
Once again, unbelievable .

What is your problem? You yourself told me M14 Doctor knows his stuff and I agree. That is why when he told me to forget about it being the op rod spring I left that until I exhausted all other things like changing the trigger groups. Why do you have to be so irritating?
 
Enlarging the gas port is a last thing you want to do...........but for those who feel enlarging the gas port is the solution, PLEASE be gentle with the drill....(I HOPE a drill press is being used...... ;)....)..........the Norc barrels are chrome lined and there is a risk of having the chrome start to flake off if you are too heavy handed with the drill......use LOTS of cutting fluid as well!!!!

Same with cutting the Norc barrels down......if not done carefully/properly, the chrome lining can start to flake off.........

I ran my Shorty M14s with USGI op rod springs, Rooster33 NM op rod guides, and ensured the gas ports were aligned.........never had any issues...........This was with Norc and USGI bolts........


:)
 
What is your problem? You yourself told me M14 Doctor knows his stuff and I agree. That is why when he told me to forget about it being the op rod spring I left that until I exhausted all other things like changing the trigger groups. Why do you have to be so irritating?

My comment was referring to the spring guide rod as someone suggested it could be worn and need replacing.

Like Skullboy, and many other experienced M14 users and tinkerers, I always ditch the chinese spring in my rifles. My personal favorite in my shorties is the Wolfe extra power recoil spring. Tubb NM springs are also excellent.
I would alsoecho the caution regarding enlarging gas port size as it is VERY easy to ruin your barrel if the chrome lining is disturbed when the enlarging tool purges through as it makes the hole bigger. I personally would only perform enlarging on a non chromed barrel
 
Humour me and take the trigger group from the canam shorty and try it in the chop mod rifle. Then try your norc ammo. Be sure to verify safety checks first though to be sure there is no hammer follow.

Question: when it fails to feed, it is NOT grabbing the round at all?
If so this means the bolt is not going back far enough. You can rule out the spring right off the bat.
MANY things could be causing this that are not related to the ammo being underpowered.
Norinco 147gr FMJ has and will continue to be one of my all around favorites for use in these rifles.

Which spring were you taking about here?
 
The rearward stroke of the oprod compresses the spring, so a weak spring would not prevent the picking up a round as the compression is now easier with the weak spring.
So the problem with your rifle was on the forward stroke if installing a stronger, longer spring fixed the issue.

Regardless, it's good to hear you got her running.
 
The rearward stroke of the oprod compresses the spring, so a weak spring would not prevent the picking up a round as the compression is now easier with the weak spring.
So the problem with your rifle was on the forward stroke if installing a stronger, longer spring fixed the issue.

Regardless, it's good to hear you got her running.

Installing the shorter Norinco spring fixed my issue.
 
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I am having a similar problem, since I got the barrel shortened. I tried most things I can think of with no luck. I don't think it's the spring, since the bolt is working against the spring pressure while the bolt is recoiling backward. If the spring was stronger, it would be even harder for the bolt to go back. It seems the bolt is not going back far enough to pick up the next round and closes on an empty chamber. I am convinced it is related to the piston not getting enough gas to slam the bolt back far enough before the bullet leaves the barrel. They must have done something different to make the short barrel guns work properly. Compare everything relating to the gas system of the two rifles to see if in fact there are some dimensional differences. I made a mod. and am trying it tomorrow. If it works, I'll get back to you

What if someone were to cut a bit of the spring to make it have less resistance instead of increasing the gas flow? Like I said in an earlier post the shorter Norinco spring fixed my problem. I am a happy camper.
 
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