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G20SF break-in period till functional...?

Discussion in 'General Glocking' started by Marshall_tx, Aug 18, 2012.

  1. Hi yall,
    So I bought my G20sf this past november and I was having some trouble with it when it came to the full power loads (i.e. Underwood, DT, Buffalo etc) I would get FTF and sometimes the gun would not even begin to cycle or leave battery after firing it. But after today I fired 150 Underwood 180gr. and 165gr. and 50 Right to Bear 180gr. and it ran 100% flawless with no problems at all using the same magazines and parts that I had been using before. So... I guessss it might just be my G20sf?:dunno: I have a 17, 19, 21, 22, 23, 36, and 32 and none of them have ever needed breaking-in. All-in-all though my "auto-cannon" is good to go after having to doubt it for so long. :drunk:
  2. ghostrider88


    Feb 13, 2009
    Most of the time their good to go right out of the box, but I Still like to put 200 to 500 RDS thru em to be comfortable enough to trust em. maybe it coming around.:cool:

  3. Beanie-Bean


    Apr 23, 2011
    Central Texas
    You may want to see if a heavier recoil spring would help. I recall reading about that on the 10 Ring forum here on Glocktalk.

    I only load in the midrange velocities for 10mm, no nuclear stuff here, so I'm just using the stock recoil spring assembly.
  4. plouffedaddy


    Apr 1, 2011
    I agree with this suggestion. I have a G21 conversion; the only time it's ever malfunctioned was using the factory spring and 135gr JHP Underwood ammo. I think it was just too hot for the factory spring. Popped in a 20lb spring and it's never had a malfunction; ejection pattern is better as well.
  5. cciman


    Jan 19, 2009
    SW Ohio
    "break in" not only means the gun but the shooter also-- both have opportunity to "mate" moving parts to working order.

    Your body hands and brain need "break in" with a new gun. Never judge a gun/shooter within the first 500 rounds.

    Shoot more before throwing needless parts at it.
  6. blastfact


    Aug 15, 2011
    Did you clean it up out of the box? Including the slide? I've never shot a round out of my OEM G20. It blessed me with full house 10mm only after the OEM barrel and connector was replaced by LW and there parts polished and fitted to my taste. By me, LOLOLOLOL
    Last edited: Aug 19, 2012
  7. G26S239

    G26S239 NRA Patron

    Mar 17, 2008
    This thread has me mulling over refinishing my G21 and getting new night sights.
  8. Wolf Spyder

    Wolf Spyder Gun Activist

    May 26, 2002
    Central Ohio
    None of my Glocks have ever needed a break-in. I can not say the same about any of my 1911's...

  9. TattooedGlock

    TattooedGlock NRA LIFE MEMBER

    Jun 21, 2006
    South Texas
    It doesn't need any break-in. But I always run a couple hundred rounds through any gun before I make it a carry gun.
  10. Remington 870

    Remington 870

    Feb 29, 2012
    well i have a Glock 20sf and it runs good thus far. One thing I found was when I detailed stripped it to do the 25 cent trigger job I found filling's and loose sandy crud in the extractor area when I was removing the slide internals to polish the tang on the striker. I used dish soap and a cue tip to clean out the small areas. we used to wash down engine blocks after machining them with hot soapy water so it works well to remove loose metal filings etc. hope this helps, my gun ran great before I detail stripped it but it was interesting to find all that crud in that area. hope this help's.
  11. Never had an issue of any kind with my G20SF. Shot every kind of ammo you could imagine through it, lots of Double Tap more recently, but did put in 20 lb springs as I shoot it often with high power loads. Got the springs to take some abuse out of the slide mostly. Not sure what happened with your gun, but I have never experienced it (with my Glocks).
  12. eb07

    eb07 Sharkin'

    Feb 19, 2010
    Third Rock From the Sun
    I also have never had an issue with my G20SF right out of the box. Thousands of rounds later and it is still perfect.
  13. DFin


    Mar 22, 2008
    Why would his gun not even begin to cycle or leave battery with the higher velocity loads? That sounds like something that would only happen with loads that are too weak. How would a heavier spring correct that problem?
    Last edited: Oct 20, 2012
  14. arnoldstrong


    Mar 26, 2009
    Atlanta, GA
    I had issues with a 29sf, not the same model, but still 10mm...all resolved after about 600 rounds and a good detail strip and clean

    although they may have been shooter related issues due to all that power in a small package
  15. nraman


    Dec 9, 2002
    I had a G20 that worked fine with light and heavy loads. If the gun would not cycle or leave battery I would suspect something went wrong most likely during assembly. Not leaving battery with full power loads doesn't sound right at all.
  16. Dan62


    May 12, 2012
    Fort Lauderdale, FL
    I have a glock 29 and love it....not happy with the pearce finger extension..not enough grip..Can you use a glock 30 finger extension on the glock 29 mags?.....

    Any other options beside pearce?

    thanks for the help.