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Old May 26, 2018, 12:11 PM   #1
HighValleyRanch
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Shield .40 sw to .357 sig conversion?

Does anyone have experience with swapping out the Shield .40 barrel to the .357 sig conversion barrel?
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Old May 26, 2018, 01:40 PM   #2
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I did it in my 4.25" Full Size 40.

I used a factory barrel which isn't an option for the Shield. I haven't seen anyone produce a conversion for the shield, have you?
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Old May 26, 2018, 01:57 PM   #3
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I found one here:
http://www.tr-enabling.com/product-p...40-357c-pc.htm
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Old May 26, 2018, 09:49 PM   #4
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all those shields out there and no one?
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Old May 27, 2018, 08:14 AM   #5
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That barrel you linked is ported and for the performance center shields only. I'd say you might wear the shield faster in .357 sig due to the higher pressure.
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Old May 27, 2018, 09:06 AM   #6
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Quote:
Originally Posted by HighValleyRanch View Post
all those shields out there and no one?
Crazy thought, but maybe others aren't as interested in doing this?

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Old May 27, 2018, 09:23 AM   #7
Jim Watson
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Probably not many.
A guy here got a Glock .357 Sig cheap.
First thing he did was to blow his savings on a 9mm barrel. Buy big and shoot small.
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Old May 27, 2018, 09:35 AM   #8
dontcatchmany
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HighValleyRanch.

I got the TR-Enabling 9mm barrel with magazine(s) for my Shield 40.

TunnelRat, I beg to differ! I am still thinking of getting the TR-Enabling 357 Sig for my Shield 40, however I have 357 Sig barrels for three other 40 S&W weapons and have a hard problem finding the time to shoot all the guns with all the calibers even with a handgun range in my back yard.

And I would not be overly concerned with wearing the gun or any gun out.

TR-Enabling is run by two currently not on active duty Marines (There is not such thing as an ex Marine...LOL). They started, from what I can determine with conversations with one of them, in Jacksonville, N.C. (Camp Legeune), not far from me. Their work has proved to be very good from my experience.
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Old May 27, 2018, 09:36 AM   #9
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Could you get a 9mm barrel & have the chamber recut for .357 SIG?

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Old May 27, 2018, 09:36 AM   #10
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Two years ago, I purchased two Sig Sauer Police Trade-ins in .40 S&W. They were in very good condition both externally and internally. One was a P226 and the other a P229. Bought two new Sig Sauer .357 Sig barrels. They are simple drop ins and use the same magazines.
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Old May 27, 2018, 11:13 AM   #11
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Interesting. As mentioned that is a ported barrel for the PC model Shield. I'd look at this one if your holster can accommodate it:

http://www.tr-enabling.com/product-p...s-40-357ct.htm

That eliminates the port and gives some extra barrel length which would be good with this caliber.

Quote:
Could you get a 9mm barrel & have the chamber recut for .357 SIG?
Maybe, but I wouldn't personally. The added pressure and reduce chamber support does not give me a lot of confidence, plus it would say "9mm" on it.
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Old May 27, 2018, 11:32 AM   #12
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I have one. It works splendidly. I just gave my Shield to my daughter though as it is too thin for me and rotates in my hand when firing. I have tried several grip sleeve options.

For comparison here I am holding a sig 365.


The conversion is awesome though.
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File Type: jpg sig365.jpg (181.6 KB, 24 views)
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Old May 27, 2018, 11:34 AM   #13
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"...have the chamber recut for .357 SIG..." Nope. You can't cut to make a smaller case fit a larger chamber. The 9mm case mouth is 1 thou smaller than the SIG's without the bottle neck. Needs a different barrel.
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Old May 28, 2018, 02:37 PM   #14
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That I did not know.....thanks!
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Old May 28, 2018, 02:47 PM   #15
disseminator
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Quote:
"...have the chamber recut for .357 SIG..." Nope. You can't cut to make a smaller case fit a larger chamber. The 9mm case mouth is 1 thou smaller than the SIG's without the bottle neck. Needs a different barrel.
Just out of curiosity, how is that when they use the same bullets?
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Old May 28, 2018, 03:41 PM   #16
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,,,,,,,"Crazy thought, but maybe others aren't as interested in doing this?"

Ding,,,Ding,,,Ding,,,,,We have a winner!!!
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Old May 28, 2018, 03:55 PM   #17
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Quote:
,,,,,,,"Crazy thought, but maybe others aren't as interested in doing this?"

Ding,,,Ding,,,Ding,,,,,We have a winner!!!
That's probably why Lone Wolf doesn't make .357 sig conversion barrels for Glocks I guess, dah!
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Old May 29, 2018, 01:51 AM   #18
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I had a Glock in .357 Sig. I sold it.
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Old June 1, 2018, 10:49 AM   #19
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here is the .357 sig conversion barrel for the standard non ported .40 shield:

remsport manufacturing shield .357 barrel

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File Type: png Screen Shot 2018-06-01 at 8.48.48 AM.png (84.7 KB, 185 views)
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Old June 1, 2018, 05:20 PM   #20
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MUST get heavier recoil spring . . .

I run 357 Sig out of my Glock 27. Even with a stiffer spring it is still snappy, though not painful by any measure.
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Old June 12, 2018, 10:12 PM   #21
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Quote:
MUST get heavier recoil spring . . .

I run 357 Sig out of my Glock 27. Even with a stiffer spring it is still snappy, though not painful by any measure.
The Glock uses the same spring for 9mm, 40 and 357 Sig.
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Old June 12, 2018, 10:37 PM   #22
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Quote:
Originally Posted by HighValleyRanch View Post
here is the .357 sig conversion barrel for the standard non ported .40 shield:

remsport manufacturing shield .357 barrel

Interesting. Now I have a reason to get a Shield in .40 caliber.
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Old June 13, 2018, 12:26 PM   #23
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I'm not raining on any parades. Do as you like.
I find it interesting that folks seem to have strong opinions about using 9mm +P ammo.Most are against it in the posts.

9mm standard pressure is 35.000 psi. 40 S+W pressure is 35,000 psi.9mm +P is 38500.

357 sig is 40,000 psi.

Whatever works for you.
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Old June 13, 2018, 05:47 PM   #24
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Quote "MUST get heavier recoil spring . . .

"I run 357 Sig out of my Glock 27. Even with a stiffer spring it is still snappy, though not painful by any measure. "

Quote "The Glock uses the same spring for 9mm, 40 and 357 Sig."
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I have changed no (0) springs with my two FN 40s or my Glock 27 ….. only magazines for the calibers (not really needed for the FN weapons) where I like the luxury of only a barrel swap. Over 1,000 rounds of 357 Sig through each of three 40 S&W pistols with a barrel swap and no problems.

My Shield 40 (my fourth 40) may eventually get a 357 Sig barrel and mags, but I like the 40 and 9mm in it right now.
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Old June 13, 2018, 06:02 PM   #25
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Quote:
Originally Posted by HighValleyRanch View Post
That's probably why Lone Wolf doesn't make .357 sig conversion barrels for Glocks I guess, dah!
But they do:

https://www.lonewolfdist.com/Detail.aspx?PROD=919986
https://www.lonewolfdist.com/Detail.aspx?PROD=919991

And they made more for other models in the recent past. I have a Lone Wolf conversion barrel for a Model 20 (10mm) in 357 SIG.
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