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Marlin 39AS: Misfires and Bulged Cases #13845058 05/24/19
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mp44 Offline OP
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I started a thread below about improving the trigger. The rifle made it to the gunsmith but not for the trigger ( I did ask him to also do a trigger job ) but for misfires. When it does fire the case has a bulge all the way around just above the rim.

Anyone care to take a guess as to what is wrong? I'll post an update when the gunsmith lets me know.

ETA: I got the rifle used and it looked LN con. The smith broke it down while I was there and said it looked like it has seen very little use, still had the factory grease.

Last edited by mp44; 05/24/19.
300 BP

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #13846597 05/25/19
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JimHnSTL Offline
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Don’t know what the issue is but sure am curious to hear the results. Because you say it has seen very little use I have ruled out the possibility of a built up lead ring from lots of use which would keep the cartridge from fully seating. Is the face of the chamber boogered up from dry firing?


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Re: Marlin 39AS: Misfires and Bulged Cases [Re: JimHnSTL] #13846826 05/25/19
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mp44 Offline OP
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Originally Posted by JimHnSTL
Is the face of the chamber boogered up from dry firing?


Good call, that is the first thing the smith said he was going to check.

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #13866780 06/02/19
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JimHnSTL Offline
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Did the issue ever get resolved and if so what was the final finding?


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Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #13866870 06/02/19
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mp44 Offline OP
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The smith still has it.

Alpha

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #13938276 06/30/19
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mp44 Offline OP
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I haven't forgotten, I am still waiting for the Marlin to be repaired. The smith keeps telling me "probably next week".

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #14005750 07/27/19
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JBLEDSOE Offline
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.

May be that some amateur gunsmith has "opened up" the chamber to make all types of ammo function thru the rifle. May need a new barrel.

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #14005974 07/27/19
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mp44 Offline OP
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I just got it back Thursday afternoon. The smith wasn't there when I picked it up so I do not know all that he did.

I did receive used parts zipped tied to the gun: firing pin & hammer spring.

When I went in a month back he did say he cleaned up the mouth of the chamber.

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #14006088 07/27/19
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JimHnSTL Offline
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So give us a range report when you have one. Hope it all works like it’s supposed to.


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Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #14006291 07/27/19
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mp44 Offline OP
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Still does not fire. I put 3 CCI shorts in it to test fire into a woodpile. 3 rounds and 3 "clicks". The rims was dented but obviously not enough for it to fire :-(.

I took it back to the gunsmith but he wasn't there so I left it with the owner of the gun shop the smith shares the store with. I hope when I do hear from him I don't get " it shot for me" or it was probably because you used shorts".

Bravo

Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #14008165 07/28/19
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JimHnSTL Offline
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I would also hope he places a priority on it this time and you aren’t waiting a month again.


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Re: Marlin 39AS: Misfires and Bulged Cases [Re: mp44] #14098780 09/03/19
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Frontiersman Offline
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When a cartridge does not fully chamber in a model 60, it will cause misfires and bulged cases just below the rim.

This is usually from a dirty chamber. Shooting non LR ammo like shorts will create a ring in the end of the chamber. I've also seen old grease/oil that hardens enough to create a cushion effect in the chamber, absorbing part of the energy delivered by the firing pin.

Some work with some solvent and a bore brush in the chamber can clear it up.


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