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Won't eject fired case

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/30/2007 at 20:15
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I should have knocked on wood a when i posted on another topic a few day ago.  I mentioned that my Marlin 336 .35 Rem was having problems ejecting Federal brass but not Remington brass.  At the range this weekend i started having problems with the Remington brass as well.  What is happening is after i shoot and go to eject the case drops down before reaching the ejector.  It doesn't happen consistently but definitely poses a problem if i'm deer hunting and need to take a second shot.  I was messing with it tonight and noticed that at times instead of the case coming straight back to the ejector the front of the case would tip out as soon as it came to the opening in the action.  The extractor would then lose contact with the case before reaching the ejector letting the brass fall.  Does anyone know what could be causing this?  I bought the rifle brand new in July and have maybe shot 200 rounds through it.  I've cleaned and inspected it and everything looks new.  Please let me know what you guys think could be the problem and how to fix it.  Thanks in advance!

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 03:03
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Maybe the extractor spring does not have enough tension. Also look for grease or other buildup in the bolt housing. Disassemble the bolt and wash it in a grease solvent. Lightly re-oil firng pin etc and see if that helps.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 05:54
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It could also be that the extractor hooks are worn/ damaged. It could be that they only marginally hooked the Rem brass, but became worn out / damaged quickly. Thereby not hooking the Rem brass as well.
 Also, is the bolt face the correct diameter? In other words maybe the bolt face is over size and the shell is half pushing into the opposite end of the bolt face away from the extractor claws?
To state the obvious, a gunsmith could sort you quickly.


Edited by 8shots - December/31/2007 at 05:57
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 07:12
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It could also be the chamber is having some build-up of gunk in it. Make sure that when you clean the gun that you pay particularly special attention in that area. Some times the chamber will also need to be lapped. A fired case slightly expands in the chamber, this can cause the case to stick some what which can lead to this problem. I have had this same thing happen in my 7400 as well as my Marlin 35.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 08:20
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[QUOTE=cyborg]It could also be the chamber is having some build-up of gunk in it. Make sure that when you clean the gun that you pay particularly special attention in that area. Some times the chamber will also need to be lapped. A fired case slightly expands in the chamber, this can cause the case to stick some what which can lead to this problem. I have had this same thing happen in my 7400 as well as my Marlin 35.[/QUOTE 
 
 I was going to say that , but then I realized that he was not having any extraction problems, only failure to eject the spent case AFTER extraction was complete.  A rough, dirty or rusted chamber is a very common cause of difficult extraction, but I don't think that's the case here.  BTW, care must be taken not to over polish the chamber walls, as it prevents the expanding brass from properly locking onto the chamber walls during the firing sequence, increasing bolt thrust to dangerous levels.  I don't quite understand it, but I've seen it addressed in reliable reloading manuals, so there it is. 


Edited by RONK - December/31/2007 at 09:34
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 08:30
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Yeah Ron, I was initially thinking the same thing, and took my guns apart several times. I was convinced that the problem was the extractor, they would come out of the chamber and not pop out of the receiver. I would take the bolts apart and inspect them thoroughly, and could never find the problem, so I finally gave in and took it to my smith, 60 dollars later and the gun shoots great. When the Rem started acting up I took it right away, same solution, same result, works perfectly.   
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 09:49
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Have you been loading shells in through the ejection port rather than through the tube mag? That makes the extractor have to work harder than it should. 
 
Now the problems you have been having may have to do with the thickness of the rim of the various brass.  HAave you checked the thickness of the brass? 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 16:04
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It is sounding to me like i need to take it to a gunsmith.  The chamber is very clean and i don't over oil it. 

Silver-I admit that i have been loading it through the ejection port 95% of the time.  I have inspected the extractor and it looks good to me.  The brass could be the problem, but i haven't checked all of them with a caliper to see how much of difference there is. 

8shots-I was wondering if the bolt face could be the problem.  I think i'll take you're advice and take it to a gunsmith.
 
Thanks guys and let me know if you have any more ideas.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 19:08
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Originally posted by silver silver wrote:

Have you been loading shells in through the ejection port rather than through the tube mag? That makes the extractor have to work harder than it should. 
 
Now the problems you have been having may have to do with the thickness of the rim of the various brass.  HAave you checked the thickness of the brass? 
 
 This is a good point.  The extractor may be out of spec enough that a thick rim is held tight  to the bolt face, whereas a thin rim may just drop away once free of the chamber. I don't think you're going to wear the extractor out by loading through the port. It (the extractor) is much, much harder than cartridge brass, and the extractor spring should not lose it's temper within a half a million cycles.


Edited by RONK - December/31/2007 at 19:09
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 20:34
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I've been comparing the Winchester, Federal, and Remington brass to one another.  To the naked eye they all look identical.  Even if they were off .001"-.002" would that be enough difference to be the problem? 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/31/2007 at 23:27
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Originally posted by Corky Corky wrote:

I've been comparing the Winchester, Federal, and Remington brass to one another.  To the naked eye they all look identical.  Even if they were off .001"-.002" would that be enough difference to be the problem? 

 
 Probably not, but your naked eye would not be able to discern that little a difference anyway...
 Wouldn't hurt to run the ammo through a cartridge/case gage to check it out though. Wilson makes them, M i d w a y carries them.
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/03/2008 at 09:10
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A rifle should be able to handle all standard brass, even with small manufacturing variances. I would say there is some problem with the rifle bolt, bolt face or extractor that needs to be checked by a pro.
What ever this problem is, it has become worse, that is why it is doing it with both brands of brass now.


Edited by 8shots - January/03/2008 at 09:12
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