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Recoil Spring Rate

Discussion in 'TOP GUNS *357 Sig* Club' started by RedHaze, Feb 26, 2012.

  1. RedHaze

    RedHaze Handgunner

    2,397
    8
    Aug 23, 2009
    SE WA
    I've noticed these before, but haven't really gotten around to 'fixing' the issue.


    You can see in these pictures, it looks like the gun is coming out of battery just a tiny bit early with my hot rod reloads. It looks like the tip of the striker is dragging on the primer for that half a millisecond or however long it's taking. And I'm getting a bit more primer flow off the top end of the primer as well with both the factory CorBon load and my own reloads. More pronounced with the reloads of course.
    [​IMG]

    [​IMG]


    Considering replacing the stock recoil spring in my G32 with a Wolff non captured rod and 20lb recoil spring.

    Since Glock uses the same 18lb recoil spring for compact 9x19, .40, and .357 models, I have no doubt a higher spring rate will slow the unlocking phase of the hot 357 sig.

    Just curious as to anyone else's experiences messing with spring rates in the .357 glocks. I know a lot of 10mm guys up their spring rates to slow unlocking with hot loads, and a lot of them claim to get a touch more velocity to boot.

    So, if you changed springs. How much more did you go? And what effect did that create or did you notice? Wolff offers 19lb recoil springs, all the way up to 24lb.

    Unless I get someone to convince me otherwise, I'll go ahead with the 20lb spring and see where that gets me.
     

  2. jeffreybehr

    jeffreybehr Silver Member

    765
    3
    Mar 14, 2009
    Phoenix, AZ USA
    I've NEVER changed one in several .40S&Ws, three .45GAPs, a 32G3, and a 31G4, and I've never seen striker-drag marks in any of my guns with any of my HOT reloads.

    I recall vaguely that the first 20SF I bought a couple years ago had a higher-rate GlockMeister spring.

    A 20lb. spring makes sense to me.
     
  3. _The_Shadow

    _The_Shadow Ret. Fireman

    4,520
    21
    Jul 23, 2007
    Southeast, LoUiSiAna
    I run my Glock-29 using the Wolff 21 lb non-captive recoil system and springs.

    What about the striker spring...try changing it out!
     
  4. PghJim

    PghJim

    1,935
    49
    Apr 21, 2005
    Pittsburgh
    Your cases are fine. It does not look like a primer smear. However, the CorBon loads seem a bit warm. When the striker mark starts to disappear on the fired cases (like CorBon), you have a pretty warm load. You can also check to see if the cases will go in and out of the chamber with just your fingers. Years ago I had signs like that shooting 9.3gr. Of Power Pistol with a 125gr. GD. After a while it sheared the lug off of the bottom of the barrel. I was lucky. Your striker mark do not look as defined as mine are, but it could be the primer or the tip of your striker. If your fired cases go in and out of the chamber easily, you should be ok pressure wise. Try a new spring or a stiffer one. One problem with a stiffer spring is that it changes the recoil feel in you hand.
     
    Last edited: Mar 6, 2012
  5. RedHaze

    RedHaze Handgunner

    2,397
    8
    Aug 23, 2009
    SE WA
    Thanks for the replies fella's.

    Still opt'ing for the 20lb spring. We'll see where that gets me when I get there...
     
  6. G20c

    G20c

    7
    0
    Dec 26, 2012
    Can anyone point me to a list of the stock spring rates for Glocks, professor google isn't helping much


    Posted using Outdoor Hub Campfire
     
  7. Snapper2

    Snapper2

    2,413
    5
    Feb 22, 2008
    s.east Texas
    http://gunsprings.com has the factory spring weights for all gen3 glocks. not sure if it mentions gen4s.
     
  8. Snapper2

    Snapper2

    2,413
    5
    Feb 22, 2008
    s.east Texas
    I just tried a ISMI 20lb spring in my gen4 compact. I used an adapter and a stock gen3 polymer guide rod so it would fit a gen4. Function was fine using lower powered reloads. To me it seems like the 20lb single spring is weaker than the stock 18lb dual RSA.:dunno:
     
  9. Snapper2

    Snapper2

    2,413
    5
    Feb 22, 2008
    s.east Texas
    Just a follow up on my above post on the ISMI 20lb spring. I did a little research and found that these springs may or may not need trimming. I got to thinking that the adapter that allows a gen3 spring to be used in a gen4 gun may cause the spring to stack or fully compress before the slide reaches the frame. This turned out to be the case in my gun. If the spring stacks when firing hot loads the frame no longer absorbs the recoil. The impact is only on the barrel lug and the bushing(front of slide). From now on I'll make a point to sure the slide has the full rearward movement whenever I install another recoil spring. I only fired a magazine full of soft reloads with the spring so it does look like any damage has been done.
     
  10. G20c

    G20c

    7
    0
    Dec 26, 2012
    Thanks, you are right on the money.

    Funny info, the full sized Glocks get a 17 lb spring which includes calibers up to 10mm.

    The compact series of pistols that go up to .357 Sig come stock with an 18 lb spring.
     
  11. Snapper2

    Snapper2

    2,413
    5
    Feb 22, 2008
    s.east Texas
    You are welcome. Slide weight also factors in on spring weight.
     
  12. tmise

    tmise

    4
    0
    Aug 16, 2013
    I replaced the factory spring in my Glock 32 with a 20lb spring, steel rod, and talon rubber grips. Made all the difference in the world, recoil is nothing like it was so now I can easily get off good consistent shots on target again and again.
     
  13. pasky2112

    pasky2112 Senior Member

    241
    2
    Aug 2, 2012
    Brevard, FL
    Why does Wolff want you to replace the striker spring if you use their RSA springs?
    From their site in the above link:
    "Due to the design of the Glock pistol, all Glock recoil springs now include a factory strength replacement striker spring."
    For purposes of tuning a slide, I don't see the correlation. I've changed striker springs tuning triggers but not recoil. Am I missing something?