Use .40S&W in a 10mm revolver? Same as .38Spl in .357Mag? - Page 1

Handguns » Ruger

[ARCHIVED THREAD] - Use .40S&W in a 10mm revolver? Same as .38Spl in .357Mag?

Posted: 9/7/2018 7:52:43 PM EDT

LGS just got in a GP-100 “Match Champion” 10mm.
Can you use .40 S&W since the loaded ammo is cheaper and brass is easy to find.

Posted: 9/7/2018 7:55:58 PM EDT

[#1]

I don't see why not.

Posted: 9/7/2018 7:57:30 PM EDT

[#2]

Have to use the clips but people do it all the time in the Smith guns.

Posted: 9/7/2018 7:58:05 PM EDT

[#3]

Only if it uses moon clips. Otherwise the headspace will be way off.

Posted: 9/7/2018 9:02:19 PM EDT

[#4]

I shoot .40 out of my S&W 610 all the time, it's perfectly fine

Posted: 9/7/2018 10:32:53 PM EDT

[#5]

I have shot .40 S&W and .357 SIG out of a factory 10mm Glock barrel.

It always headspaced on the extractor.

Yes... .357 SIG just to see if it was possible.

I do however have a .40 S&W barrel and a .357 SIG barrel for my Glock 10mm.

They work well and have reasonable accuracy!

***Yes I know the post was about a 10mm revolver but someone will wonder or ask about a semi-auto!

Posted: 9/8/2018 8:02:27 AM EDT

[#6]

I'm really looking at one of these too, but there have been reports of misfires with .40 that have me hesitant to pick one up:

https://revolverguy.com/psa-40-sw-in-the-10mm-gp100/

Posted: 9/8/2018 8:27:08 AM EDT

[#7]

Quote History

Quoted:
I'm really looking at one of these too, but there have been reports of misfires with .40 that have me hesitant to pick one up:

https://revolverguy.com/psa-40-sw-in-the-10mm-gp100/

View Quote

I would suspect that might be an issue with that one gun. I am guessing the cylinder face is out of spec. If it's done right both cartridges should be equally reliable. I have many thousands of rounds of 40 through a S&W 610 with no ignition issues. Ruger needs to make that right.

Posted: 9/13/2018 6:53:19 PM EDT

[#8]

My 10mm Blackhawk came with a spare .40 cal cylinder.
I have only shot 10mm with it,so far.

Posted: 9/13/2018 6:58:38 PM EDT

[#9]

Quote History

Quoted:
My 10mm Blackhawk came with a spare .40 cal cylinder.
I have only shot 10mm with it,so far.

View Quote

Needs the extra cylinder because it can’t use clips

[ARCHIVED THREAD] - Use .40S&W in a 10mm revolver? Same as .38Spl in .357Mag?

Handguns » Ruger

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