Cure stovepiping Problems (M14S)

K

Kenco

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Hello all,

I just updated my spring and op-rod with the one from Marstar. Now every once in 10-15 rnds I'll get a stovepipe.

Is this caused by:

A) The cheap Marstar ScopeMount
B) The spring being too long (Though the Marstar Spring is shorter than my original...It my have more spring to it thought)
C) The Gas system dirty/not setup properly?

Now if it's the spring, can I just cut the spring down a bit?


thanks,

Ken.
 
Gas system, ejector and ammo. A stovepipe is when the case fails to eject and gets caught, usually upright(hence the term), between the bolt and the chamber. However, too low of a scope mounting can be hit by an ejecting case and be knocked back into the action with the same result but sideways.
 
If this is a new malfunction for this rifle after replacing a whole bunch of parts, you must go back to the original configuration if you have the parts and then introduce one new variable at a time and see which one is causing the problem.

I have found that on most semi-auto firearms with a plunger style ejector built into the bolt, stovepipe problems are caused by the ejector spring being too powerful. The case head gets kicked out of the bolt face before the case mouth can clear the reciever. In this case, it is usually most effective to clip a couple of loops from the ejector spring, or possibly find a stronger extractor spring. The first option is usually easiest. As long as the casings clear the rifle there is no need to chase them all over the range.
 
I had the same problem too.

I found the cause to be the Marstar cheapo scope mount. I milled-off some of the bottom of the mount, and it stopped stovepiping as often. When I switched to a Springfield mount, it stopped stovepiping entirely. Hmmm...
 
I do believe the norinco ejector spring is a bit longer than the USGI one. I have a TRW bolt with USGI parts in my M305. No stovepipes and no FTE. It drops the brass about two feet away. Some people clip away at the nork ejector spring and others replace it with USGI. Some rifles (I'm told) will not give up on the stovepiping no matter what you do.
 
Thanks guys!

Craftsman--I think mine is doing the exact same as yours. Looking into another mount now. The brass is sure beating the hell out of the mount though...

Side note: It does NOT do this when the scope mount is not installed.


Again,

Thanks

J.
 
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