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  #1  
Old 01-15-2019, 5:50 PM
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Default Glock 22 to 357 SIG conversion, recoil spring upgrade?

I've been wanting to bite the bullet on a Storm Lake 357 SIG conversion barrel. I've got a former sherrif buddy coworker who has talked me into it.

Easy enough, but I've read that it might be a good idea to upgrade the recoil spring?

I have the gut feeling that it's not going to matter much on the Glock, and maybe those are actually same part #'s between the 22 and 31.

Maybe I should run it and try it and if I have issues swap out the spring for a more stout unit?

Gen 3 btw.
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  #2  
Old 01-15-2019, 8:26 PM
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I never bothered and always worked fine but maybe if shooting 357 Sig a lot may make sense? I put a stock Glock 31 barrel in my Glock 22.
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  #3  
Old 01-15-2019, 9:17 PM
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Glock 17/22 have the same spring. Different part # for inventory. It it’s the exact spring.

So if the meek 9mm spring can handle hot 40, you should be fine with the .357 sig.

+1 on it being a dead caliber
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  #4  
Old 01-15-2019, 9:37 PM
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The 357 SIG isn't fun to shoot!?

That's saddening.
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  #5  
Old 01-16-2019, 4:51 AM
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First thing I did in the 90's was put in a BarSto 357 sig barrel in my G22. Accuracy improvement was like nite and day, and I never expected such a drastic improvement.
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Old 01-16-2019, 6:31 AM
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Factory spring tensions for the Glock 22 & 31 are the same at 17lbs, you should be just fine.

Don’t listen to the guy above OP, if you want to shoot .357 DO IT! I swear some people here are like the Dems of the gun world. It’s their way or no way, and they know whats best, like a bunch of Pelosi’s...
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Old 01-16-2019, 6:59 AM
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I switch back and forth all the time between .40 and .357 SIG in my Glock 22 with nothing more than a barrel change. No issue at all.
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Old 01-16-2019, 7:07 AM
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you should learn to reload this round, it wouldnt cost so much. its a pretty fun round and a bit snappy on a compact.
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Old 01-16-2019, 7:57 AM
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Quote:
Originally Posted by dohc View Post
you should learn to reload this round, it wouldnt cost so much. its a pretty fun round and a bit snappy on a compact.
357 sig is a lot like 10mm cost, if you shop or order at the wrong places it's more expensive. In premium ammo it can be had for the same price as .40 0r 45.
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Old 01-16-2019, 8:37 AM
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Quote:
Originally Posted by HopetonBrown View Post
In my travels I've encountered people who own guns for different reasons.

Some, like me, are interested in becoming better at shooting them. Oddly these people are in the minority.
Aren't you special.
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  #11  
Old 01-16-2019, 11:41 AM
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Quote:
Originally Posted by dohc View Post
you should learn to reload this round, it wouldnt cost so much. its a pretty fun round and a bit snappy on a compact.
This was my plan. Buy a few boxes to shoot and have the brass. I guess I could also get a resize die and neck down some of the ton of 40 brass I have.
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  #12  
Old 01-16-2019, 12:41 PM
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Quote:
Originally Posted by SquidBilly View Post
This was my plan. Buy a few boxes to shoot and have the brass. I guess I could also get a resize die and neck down some of the ton of 40 brass I have.

.357 Sig is a necked down and trimmed 10mm casing. The casing will be too short using the .40 brass.
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  #13  
Old 01-16-2019, 1:37 PM
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Quote:
Originally Posted by code_blue View Post
.357 Sig is a necked down and trimmed 10mm casing. The casing will be too short using the .40 brass.
Ahhh. Good to know. Thanks. Guess I'll stock up fresh brass.
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  #14  
Old 01-16-2019, 2:34 PM
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Quote:
Originally Posted by SquidBilly View Post
This was my plan. Buy a few boxes to shoot and have the brass. I guess I could also get a resize die and neck down some of the ton of 40 brass I have.
Great round to shoot. Very flat. I carry it every day.
Reloading can be a PITA but can be done. Ive had good results on a turret press but its a ***** on a progressive.
Its one of my favorite calibers and i shoot a lot. Of course i like 10 mm also. I guess i am an idiot or something. Too many clowns �� around here anymore.
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  #15  
Old 01-16-2019, 5:00 PM
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Quote:
Originally Posted by code_blue View Post
.357 Sig is a necked down and trimmed 10mm casing. The casing will be too short using the .40 brass.
10mm uses large pistol primers. a lil pricey to do as 10mm brass cost more than 40/357 sig
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  #16  
Old 01-16-2019, 5:55 PM
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Quote:
Originally Posted by Don the savage View Post
Great round to shoot. Very flat. I carry it every day.
Reloading can be a PITA but can be done. Ive had good results on a turret press but its a ***** on a progressive.
Its one of my favorite calibers and i shoot a lot. Of course i like 10 mm also. I guess i am an idiot or something. Too many clowns �� around here anymore.
I do everything one step at a time on my Lee, so I go slow and easy with every caliber. 357 SIG shouldn't be so bad. I assume I'll have to treat it like a rifle case and lube and trim if need be.

The bullet is 9mm dimensions and the 357 SIG can support up to 180gr. or something like that?
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  #17  
Old 01-17-2019, 1:46 AM
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Quote:
Originally Posted by dohc View Post
10mm uses large pistol primers. a lil pricey to do as 10mm brass cost more than 40/357 sig

Yes, you are correct. I should've clarified that the design was based on the 10mm casing, but 10mm casing is not 100% suitable for producing the round although many have successfully done so. My point was to clarify the internet myth that it is "loosely" based on the .40S&W. It seems closer to the 9x25 Dillon that actually used the 10mm casing to me.

Some folks have successfully used the .40 casing to produce .357Sig also, however the slightly shorter length can produce improper crimping and pressures. It was a highly debated topic at one point. Probably still is.

I will concur that buying/finding brass would be the best way to go.

Here's an interesting thread though:

http://10mm-firearms.com/wildcats/357-sig-long-neck/
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Last edited by code_blue; 01-17-2019 at 1:52 AM..
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