Glock guys: stupid question re: .40 and .357 followers


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1KPerDay
February 20, 2013, 02:15 PM
I have a few .357 mags that I got to use in my .40 glocks... are the followers different? Does it actually make any difference? I haven't had any reliability problems using the .357 followers but I haven't run a billion rounds through them either.

http://www.glockstore.com/glock-factory-parts/glock-mag-follower-40sandw

http://www.glockmeister.com/40-Magzine-Follower-Marked-5/productinfo/G1028-5/

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MasterSergeantA
February 20, 2013, 02:19 PM
I have never noticed a difference. But I use the .40 magazines in both and seldom the other way around...sheer availability and cost being my reasons.

Maybe I'll find the time to go out and do a more scientific study.

ku4hx
February 20, 2013, 02:41 PM
The Lone Wolf website lists different followers for certain 357 Sig models, specifically part no. GLO-1009 for the 10 round magazine for models 31 and 32 only. Part no. GLO-1028-5 is listed for models 22-24, 27 and 35.

I don't own any 357 Sig specific magazines, but those marked "40" have worked fine for me through a couple of thousand rounds of 357 Sig cartridges..

nelsonal
February 20, 2013, 03:48 PM
I'm pretty sure my FNP factory mags are stamped .357/.40.

gunnutery
February 20, 2013, 07:28 PM
The cost is low enough that you could buy some extra followers to have on hand in case you do end up having issues. But you said you haven't had any issues yet, so I wouldn't worry about it too much. Theyre always going to be available even IF a ban is put into place, so you could just hold off too.

GI_Jared
February 20, 2013, 08:50 PM
Here is a Hickok45 video that covers the issue. He claims that there isn't really an issue with the followers.
http://www.youtube.com/watch?v=S4NeS0ezWMA

Deaf Smith
February 20, 2013, 09:52 PM
I use both Glock .40 and .357 Sig Glocks interchangeably. Never ever had a problem with them in either gun as long as I don't forget which gun is chambered for which round (.357s will load in a .40 barrel but not the other way around and nether way is a good idea.)

Deaf

Tommygunn
February 21, 2013, 01:25 AM
I have two guns in .40 S&W and both have slides marked for both calibers, so I have to believe the followers work for both calibers.

Dan-O
February 21, 2013, 10:03 AM
The followers are different, but they will work with either round.

One thing of interest. When using .40 mags with .40 followers, I can squeeze one extra round of 357 sig into the magazine and this is across the board. So it works for 22, 23, and 27 mags.

1KPerDay
February 21, 2013, 01:07 PM
Weird... I can't. I have several "correct" .40 mags and they all hold the stated max capacity only.

greyeyezz
February 21, 2013, 03:27 PM
Here ye go

http://img.photobucket.com/albums/v190/greyeyezz/P1030717_zps2f06fe24.jpg

1KPerDay
February 21, 2013, 07:34 PM
Weird... anyone know their rationale for the difference? Is the taller follower supposedly more reliable with .357 cases?

Dan-O
February 21, 2013, 07:45 PM
Here's a rear shot. And yes, the 357 sig followers supposedly help with feeding the 357 sig round. Like I said, I've used them interchangeably with no feeding issues in my end and can squeeze an extra round of 357 sig into 40 mags with 40 followers.

http://i726.photobucket.com/albums/ww266/yeahitsthatbig/c939a17b.jpg

1KPerDay
February 21, 2013, 07:46 PM
Cool, thanks.

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