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Author Topic: tso failure to extract  (Read 1703 times)

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Offline midaltantic44

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tso failure to extract
« on: September 13, 2020, 06:44:27 PM »
My .40 s&w has suddenly experienced erratic failure to extract.

I replaced the extractor and extractor spring - the old extractor looked a bit worn - yet twice today at a match had same experience. The round fires, the slide recoils, but does not extract the spent case, so the pistol jams as it tries to load a fresh cartridge while the spent one is still in the barrel. If I drop the magazine and work the slide the spent round will then extract.

Any suggestions?
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Offline Tok36

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Re: tso failure to extract
« Reply #1 on: September 14, 2020, 12:32:40 AM »
How many rounds have your put through the pistols barrel? Has this malfunction occurred with multiple types of ammunition? Is it possible that the barrels chamber has become rough?

An extra power Extractor Spring may be an option, but i am interested to hear the input of other forum members on the malfunction.
« Last Edit: September 24, 2020, 02:36:41 PM by Tok36 »
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Offline midaltantic44

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Re: tso failure to extract
« Reply #2 on: September 14, 2020, 07:38:24 AM »
about 10,000 rounds. Range brass, so that could be an issue. The chamber question is a good one. I have some brasso metal polish. Thoughts on using that?
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Online Stuart

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Re: tso failure to extract
« Reply #3 on: September 14, 2020, 09:39:17 AM »
If range brass.  Change to new or once fire.
If you have the cases that failed, measure the case rim. Bet they are undersize.
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Offline scroadkill

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Re: tso failure to extract
« Reply #4 on: September 14, 2020, 10:30:22 AM »
I had issues with acme bullets at 0.401" OD. went to 0.400" blues and problem went away.
also there are like 3 size of extractors.. could be a 9mm extractor trying to grab a 40 case.
 
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Offline midaltantic44

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Re: tso failure to extract
« Reply #5 on: September 14, 2020, 10:48:33 PM »
Range brass can have issues but I’ve been using it all along w no problems till last two matches....so I figure something has changed. 
Polished the chamber. And ordered an extra strength spring. So we’ll see.
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Offline Tok36

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Re: tso failure to extract
« Reply #6 on: September 15, 2020, 11:32:14 AM »
Let us know how it goes, we all learn from this stuff.
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Offline midaltantic44

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Re: tso failure to extract
« Reply #7 on: September 17, 2020, 09:46:06 AM »
will do
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Offline midaltantic44

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Re: tso failure to extract
« Reply #8 on: September 24, 2020, 08:19:17 AM »
Polished chamber w brasso. had another fte on a different magazine. Because it was practice I could have the casing. Didn't see anything on it to give pause, but anyone have any thoughts what to look for. However, as I said, it has about 10,000 rounds thru and never did this before. waiting on extra power extractor spring
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Offline recoilguy

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Re: tso failure to extract
« Reply #9 on: September 25, 2020, 03:00:12 PM »
The spring is easy to switch out and should help as long as the extractor is not cracked or chipped.
Look it over carefully when you have it out to re spring it.

Best of luck

RCG
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Offline midaltantic44

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Re: tso failure to extract
« Reply #10 on: September 28, 2020, 02:44:18 AM »
installed new spring, still problem. Then installed extra power and shot a match w/no problem.
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Offline Tok36

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Re: tso failure to extract
« Reply #11 on: September 30, 2020, 01:03:30 AM »
^^ Glad that you have remedied the malfunction, thank you for the follow up. If it pops back up, let us know, we all learn from this stuff.
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