Model 41 weirdness

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Model 41 weirdness

Post by troystaten on 4/1/2017, 2:39 pm

I have an early 70's model 41 with a 7 and3/8 inch barrel, and ever since I got it about 2 years ago it has functioned with out a hickup until recently.  After the last few times I have field stripped and cleaned the gun the first 2-4 shots will stove pipe when I shoot it once after that it functions perfectly.  I used to clean it after each time I shot it and now I tend to not clean it until I have put about 500 rounds through it.  My cleaning procedure has not changed just the cleaning intervals. I am shooting CCI SV in it.  Any thoughts would be helpful.

thanks

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Re: Model 41 weirdness

Post by AllAces on 4/1/2017, 3:19 pm

Could be any number of things.  Assuming the extractor is not worn and the chamber has not become eroded, I'd install new Wolff springs. The extractor is a relatively easy fix.  If the chamber is eroded, send the barrel to Ten-Ring Precision and have Alex Hamilton reline it.
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Re: Model 41 weirdness

Post by troystaten on 4/1/2017, 6:58 pm

Hey Aces, the spring is original, barrel does not have much mileage in it, I have an extra spring so will give it a try.

thanks

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Re: Model 41 weirdness

Post by Soupy44 on 4/1/2017, 9:43 pm

Mine does the same thing. I use the trick of a dot of oil on the first round of the magazine. It gets oil where it needs to be in mine apparently. I didn't put enough on today in SF and had an alibi in the NMC RF. Shot 22 all day, no more issues.

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Re: Model 41 weirdness

Post by troystaten on 4/1/2017, 10:07 pm

Thanks, Soupy, funny pistols, had no problems for many rounds and now have the problem only after I clean it for the first few rounds.

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Re: Model 41 weirdness

Post by Soupy44 on 4/1/2017, 10:14 pm

I've only been shooting BE about 6mo now, so take this with a grain of salt.

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Re: Model 41 weirdness

Post by 243winxb on 4/2/2017, 10:13 am

My   70's model 41  heavy barrel  did the same thing after cleaning.


Even after a trip back to the factory. 

This is why i sold it and kept High Standards and Rugers.


Sorry to see it go, as i had my highest  50 yard slow fire scores with it.  
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Re: Model 41 weirdness

Post by AllAces on 4/2/2017, 2:15 pm

Contact KC Crawford on this forum. KC is probably one of the best M41 gunsmiths. At Perry last year KC diagnosed the failure to extract problem with my M41 as an eroded chamber. I sent the gun to Ten-Ring Precision to have the barrel relined. It is now a sub-half inch gun and runs flawlessly. While it was at Ten-Ring, Alex Hamilton also squared up the face of the bolt.
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Re: Model 41 weirdness

Post by kc.crawford.7 on 4/3/2017, 7:50 am

Start with the "plunk" test.  Take the barrel off the pistol and hold it 90 degrees with the chamber up.  Drop a live round into the chamber.  If it doesn't fall all the way into the chamber to the rim of the cartridge you have some leading that needs to be cleaned out.  Use a .25-.27 caliber bore brush, in the chamber only, to clean the lead out of the chamber.  When you can drop a live round into the chamber and tip the barrel and it falls out, you should be good.  Then see if you still have the problem.
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Re: Model 41 weirdness

Post by Virgil Kane on 4/3/2017, 7:56 am

First I would try a different ammo before anything.  I have a HS that has run flawless for decades until I tried two different lots of recent CCI SV ammo.  With a clean chamber the new CCI will not drop into the chamber and stops about 1/2 way into it with a plunk test with all the wax wiped off of the round.  RWS, Eley, Aguila, Wolf and SK all drop in with no problem.  These later batches of CCI SV have cost me nothing but alibi's with FTF-FTE in this gun and are running about .001" to .0015" bigger measure 1/2 way between the rim and case mouth before firing than all the other makes of ammo I have. Don't know if that difference would matter or not but my HS doesn't like it especially after a few rounds and carbon deposits begin to build in the chamber.

Worth a tryin different ammo before changing springs.  My other gun ( a M-41 out for barrel related repair) has run flawless for the last 10 years but I can't comment on the 41 and the new batches of CCI SV since I haven't had the chance to try it with that gun.


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Re: Model 41 weirdness

Post by troystaten on 4/7/2017, 8:29 pm

Thanks Virgil, both CCI SV and SK SV+ drop into the camber with out much effort, the CCI SV is a little tighter, strange how it is only on the first few shots of a clean gun.  

take care

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Re: Model 41 weirdness

Post by LenV on 4/7/2017, 9:21 pm

troystaten wrote:Thanks Virgil, both CCI SV and SK SV+ drop into the camber with out much effort, the CCI SV is a little tighter, strange how it is only on the first few shots of a clean gun.  

take care
Not strange if you are leaving a little oil in the barrel. I remember old school was always to put a little on the patch on the last pass. That works great for the old single shot your putting away but not so well for a 41. Just a thought.

Len
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Re: Model 41 weirdness

Post by troystaten on 4/7/2017, 11:40 pm

Don't think it is oil in the barrel, I just use hoppe's number 9 to clean then run a dry patch.  I did oil the rails and slide so maybe some oil got in the barrel.

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Re: Model 41 weirdness

Post by LenV on 4/8/2017, 12:10 am

Nelson Custom recommends a very light oil for their conversions. I tried it in my conversion and now I am liking it for my 41. This is the lightest oil I have ever seen (and still work) I have to switch to a lighter oil in cold weather and this works nice. I suspect if a little dab of this got left it wouldn't gum the works. NFI

http://www.ebay.com/itm/291669091428?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT


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Re: Model 41 weirdness

Post by jglenn21 on 4/8/2017, 9:15 am

The MFR-7 is the old Bob Marvel oil.. good stuff
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