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SW Model 41 Malfunction

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saleen322
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Post by smlonbf Sat Jan 28, 2023 8:29 am

Last night in timed fire I was surprised by what seemed like a full auto 3 shot burst.  It didn't happen again the rest of the night but I wonder what could have caused it.  I am not a tinkerer - it's a stock gun and I had just cleaned it last week.  It's mid 80's gun, last gone over by Smith & Wesson at their place 3 years ago.

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Post by bruce martindale Sat Jan 28, 2023 9:44 am

Hmmm, not sure. If your finger bounced on the trigger in recoil that could do it. I’m thinking it takes a loose grip to allow that but not certain.

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Post by Steve K Sat Jan 28, 2023 5:02 pm

I had the same problem, but two round, intermittent, bursts. I took it to a gunsmith and all he did was clean it which solved the problem. He used acetone and a a dental pick. I clean it the same way after 500 rounds and still no more problems.

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Post by saleen322 Sat Jan 28, 2023 5:17 pm

If you are able to recover the fired cases, check for firing pin strike marks on all of them. I say that because I repaired High Standards before where the case rim would not fit flush and then the rim got caught enough that the slide hit the side of the case rim and caused it to fire. The round would be fired but would have no firing pin hit. Cleaning the slide face so the round goes in place correctly will often fix that. Hope it helps.

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Post by -TT- Sat Jan 28, 2023 5:31 pm

Another possibility - broken firing pin. The pistol can work fine with one, but randomly start to slamfire if it gets out of position, then suddenly be fine again.
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Post by NYKenn Sat Jan 28, 2023 6:27 pm

Had a model 41 go full auto at a match many years ago. Started intermittently. Within a week was full auto all the time. Disassembled and checked trigger, etc. without finding a problem. No apparent reason. Sent it back to S&W. Returned repaired three days before Perry No time to shoot it. Practice day went full auto. No satisfaction from S&W.
Went home and exchanged every part from another 41 one at a time until it did it again. The slide was the problem. Found the slide was worn on the inside. There is a small 1/2 moon notch on the right? side that the trigger bar moves into. That notch had worn at the top and was capturing the trigger bar every time. Back then $ 65.00 for a new slide and not a problem since. 
Gun was brand new in 1971, problem was early 80s with at least 100k rounds through it.

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Post by Cmysix Sun Feb 05, 2023 11:36 am

Seems like the trigger transfer bar is the cause of many malfunctions in these pistols
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Post by kc.crawford.7 Mon Feb 06, 2023 9:07 am

Overtravel to tight can cause this also.
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