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Slight barrel peening and FTE

This is a discussion on Slight barrel peening and FTE within the SIG Sauer Pistols forums, part of the SIG Sauer Forum category; Hello all, I wrote off my experiment with converting my sp2022 to 9mm after, despite many modifications to the factory 9mm barrel, the gun failed ...


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Old 01-04-2017, 02:17 PM   #1
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Slight barrel peening and FTE

Hello all,

I wrote off my experiment with converting my sp2022 to 9mm after, despite many modifications to the factory 9mm barrel, the gun failed to cycle reliably.

Yesterday, however, after shooting about 100 rounds through my Sp2022 I noticed a burr forming at the end of the barrel hood, which I filed off with a metal file.

After shooting another 100 rounds today, there was a new burr on my barrel hood and on the slide.

It doesn't hang up on the barrel, but should I be worried that this may compromise reliability and/or safety as I shoot more rounds through my SP2022?

Also I had a failure to extract today which required a mallet and bench to clear. I was shooting Pierce reloads but could this have anything to do with the issue mentioned above?

Thank you in advance for any advice.
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Old 01-04-2017, 03:01 PM   #2
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I don't have a 2022 pistol, but none of that sounds good!! Call SIG...

Cheers
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Old 01-04-2017, 03:22 PM   #3
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You didn't make any modifications to the slide or other parts while experimenting with the .40 barrel, did you?

Either way, I would send it in to SIG. But don't tell them about experimenting with a different barrel.
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Old 01-04-2017, 03:53 PM   #4
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Is the burr forming on the 9mm barrel or a different barrel?

Not at all clear on what modifications you needed to make to the barrel, so my advise would be to stop using it.
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Old 01-04-2017, 05:00 PM   #5
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jthom137, pictures really would help, #1 showing the burr forming, and #2, are you trying to convert from .40 S&W to 9mm by just a barrel change?
As far as your using reloads, I'm not familiar with who Pierce is/are, and there is a reason most manufactures won't warranty their stuff using them.
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Old 01-05-2017, 08:17 AM   #6
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Quote:
Originally Posted by GoneBallisticInAlabama View Post
You didn't make any modifications to the slide or other parts while experimenting with the .40 barrel, did you?

Either way, I would send it in to SIG. But don't tell them about experimenting with a different barrel.
I only filed off the burr that was forming when shooting the 9mm barrel
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Old 01-05-2017, 11:50 AM   #7
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jthom137, I'm guessing it's at the front of your barrels hood, as the barrel tilts up into its locked position for firing. There is probably a burr along the forward edge of the ejection port, which is "shaving" a little off of the forward edge of the barrel hood, every time it locks up. A file may be a little course, wrap it with some 400 to 600 grit wet or dry paper, and try to polish the underside edge of the slide at the ejection port opening. Try to break any sharp edge from the interior of the slide to the ejection port. After cleaning it up of any grit, put a dab of grease at the forward edge of the barrels hood. It sounds as if your barrels hood may have been just a tad "oversize" and the ejection port is trying to slowly shave it to size. Your reliability problems may be caused by the barrel not fitting properly. Excessive stresses on parts can cause malfunctions, and that includes a miss-fitted barrel.
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Old 01-05-2017, 12:32 PM   #8
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I have to admit to very limited knowledge of the P2022. Is the slide able to accommodate all caliber barrels like the 224, 226 and 239 or is the 9mm barrel OD smaller than the 40/357 barrel like the 229?

Still not clear on what modification were made to this 9mm barrel.
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Old 01-05-2017, 01:07 PM   #9
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Quote:
Originally Posted by ThnkFrst View Post
I have to admit to very limited knowledge of the P2022. Is the slide able to accommodate all caliber barrels like the 224, 226 and 239 or is the 9mm barrel OD smaller than the 40/357 barrel like the 229?

Still not clear on what modification were made to this 9mm barrel.
The sp2022, has a polymer frame, so I would guess that the slides would be different like the 229. Just a guess. my sp2022 works fine, with the 9mm caliber, I was not aware that it even came in different calibers. But it does come in 40, whether there is a 357sig drop in, I don't see it on the sig site.

I believe that it was developed for the french, back some years ago with about 700k units made only in 9mm

I have read the ops initial post repeatedly and like you am not sure what mods have been done to which caliber barrel or slide
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Old 01-05-2017, 09:51 PM   #10
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The only reliability problem I experienced when switching back to the .40 barrel (the original factory barrel that came with my gun) was a single FTE. In hindsight, I should have kept the brass that was causing it because that would have let me examine the outside diameter and see if it was ammo-caused or caused by the gun (as in if the spent case was larger than usual, it was probably caused by simply too much powder or was not resized correctly by the manufacturer).

I shot 100 rounds with no problems, saw the burr, filed off the burr, and then shot another 100 rounds with only the single FTE.

I think right now I am going to shoot another 100-150 rounds and then examine the hood and slide and see if the burrs get larger. I'm starting to think that if these persist I might have to junk the gun since I am not the original owner and could not get warranty work for the gun anyway.
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Old 01-09-2017, 11:26 AM   #11
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So here's an update:

I shot another 100 rounds of Pierce reloaded .40 S&W and encountered the exact same issue: the slide was locked, but the case was not the cause as we were able to knock it out but the slide was still stuck at the same position.

The barrel hood burrs did not get any larger, but the smith at the range thought that it might be caused by ammo. Higher pressures (which may be caused by a small-rifle primer) may have caused the barrel to move and cause it to lock at the front bushing.

I have decided to purchase 250 rounds of Remington new-manufactured brass ammo to see if it is an ammo issue and not a gun issue.

the tl;dr version is: DON'T EVER SWAP FACTORY BARRELS, not only would it not work, but it can permanently damage your gun.
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Old 01-09-2017, 12:31 PM   #12
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Originally Posted by jthom137 View Post
the tl;dr version is: DON'T EVER SWAP FACTORY BARRELS, not only would it not work, but it can permanently damage your gun.
What is the "tl;dr version"?

Beyond that question, I don't agree with the statement.
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