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G20 Failure to Feed reloads

Discussion in '10mm Reloading Forum' started by Call911, Sep 6, 2010.

  1. I loaded 100 rounds to the following specs:

    200gr XTP
    9.0gr 800X
    OAL 1.253
    CCI300 primers
    Starline brass - new
    1/2 turn on Lee FCD

    Lee carbide dies with FCD
    and Lee Bulge Buster

    I had failure to feed issues with my G20 setup as follows:

    Gen 3 Glock 20
    KKM standard length barrel
    20# Wolff recoil spring
    +10% mag spring

    Rounds would hang up by 3 points,,,the bolt face, the feed ramp and
    the top of the chamber (possibly called a 3 point ???)

    Another shooter with me had a 100% stock gen3 G20 -- no mods whatsoever. With a loaded mag, the slide pulled back and let go to
    chanber a round......the round would hang up just like above. The round would be hung up at the top of the chamber, the feed ramp and the bolt face. This failrure occurred several times....only when you forcefully would snap and jerk the pistol would the round chamber. During firing with the stock G20 the same hangup would occur.

    When home I measured some DT 135's and some 180's. The only difference I could see was the DT rounds OAL was 1.243 while my OAL was 1.253 which is well within any spec I've ever seen.

    I'm beside myself. I didn't think reloading was that sensitive to minor variations....I mean a stock glock will not eat my reloads. I just do not understand what I could possibly be doing wrong.

    Send Help Soon.
    Last edited: Sep 6, 2010
  2. MSgt Dotson

    MSgt Dotson

    Sep 30, 2006
    My Hornady factory Ten 200 gr XTPs measure 1.24"...

    The heavier recoil spring will increase the cartridges 'bounce' off the ramp; combine that with longer OaL (which starts the bounce earlier than normal), you can perfectly wedge it at 45 degrees up into the bbl hood.

    Shorten them a bit.....if your load is flirting with max, reduce it .2 gr....

  3. Looks like you're my only responder, thanks. I've ordered a stock recoil spring -- duh I can't find my original stock spring -- I musta done something smart with it. Anyway, I took one of my rounds that will not feed properly and tried to insert it into my barrel (removed from slide) The round had a distinct point where it seems to hang up when compared with a factory load. I took my reload back to the loading bench and re-crimped it to match a DT load crimp. The round now feeds without the hang-up. I went out with the repaired rounds and tested 20 of them with my KKM barrel. All chambered and fired without any failures. Could it be that simple? The loads did not have enough crimp? Quite possably the case. I will load another batch and match DT's OAL and DT's taper crimp and see if that works.
  4. MSgt Dotson

    MSgt Dotson

    Sep 30, 2006
    The KKM barrels are undoubtedly a few thousandths tighter near the extractor groove, and, like .001" smaller even at the case mouth. Crimp may very well have been the issue, good luck
  5. JTknives


    Dec 1, 2009
    in my glock 20 i can load from an OAL of 1.23-1.39 and it will feed them loaded with 200gr xtp. i am running a stock spring with a custom made comp the reduces slide velocity so a stronger spring is not needed. i am running a threaded LW barrel.
  6. I loaded up 200 rounds w/various powder/bullet configs for testing. I just got back from testing and actually had 100% feeding. Here's what I did to fix the far:

    1. I read everything I could in these forums re glocks and failure to feed reloaded rounds
    2. From these posts one poster said he set his Factory Crimp Die to match a factory
    load crimp...if that makes sense.
    3. I shortened the OAL from 1.25 to 1.243 which is about the length of a DT round.

    So all I really did was more of a crimp and shortened the round a bit. That appears to have done it. I fired about 150 rounds without any failures.

    PS....the +10% mag springs did cause the follower to prematurely cause the slide to stay back with a round still in the mag....I will be going back
    to the stock weight springs.
    Last edited: Sep 12, 2010
  7. Atomic Punk

    Atomic Punk

    Mar 11, 2008
    kinda weird that your loads were hanging up in the other guys stock g20. most of my loads are 180g xtp's in starline and have a 1.260 oal and they have always run just fine through my g20 and my wifes g29

    arent the 200g xtp's the same as the 180g just a bit longer?
  8. Maine1


    Jul 20, 2007
  9. texas 48

    texas 48 Gold Member

    May 19, 2007
    San Antonio, TEXAS
    I would not load a 200XTP near max load to 1.243 OAL. DT is using a commercial powder. You are taking a real risk for a catastrophic failure IMHO.
  10. What do you consider to be a near max load?
  11. texas 48

    texas 48 Gold Member

    May 19, 2007
    San Antonio, TEXAS
    Any load that is stated in the manufactures data as max. Depending on projectile. Eg Power pistol max load for 165gr in 10mm is listed @ 10.0 gr I would condired near max is 9.8 or 9.9 gr @ 1.255 OAL. If the. OAL is reduced to 1.245 and your charge is 9.8gr you could have a big problem with a case head separation or a flat out KABOOM. If you wanted to set the OAL @1.245 I would start out @ 8.0gr and work up in .1gr increments until you see pressure signs like flattened primers or headstamps. Glock smiles would also be an indication that the charge needs reduction.
    I believe that max published load for 180XTP with 800X is 9.0 @ 1.260
    Last edited: Sep 13, 2010
  12. While I was testing the last batch of reloads for feeding reliability I tried to fire a batch of 200gr WFNGC rounds I loaded a few months back.....all failed to feed. The OAL was 1.253" I don't know why this is such a problem....the only way to get these to feed in my G20 is to load them to an OAL around 1.24 I will just have to reduce the powder charge and do some additional chrony tests.
  13. Meathead9


    Aug 23, 2009
    The PRK
    I have been doing A LOT of testing with the 200gr WFNGC lately, from 1.250 - 1.270 OAL & light to firm crimp. I have used a 22#, and I'm now using a 24# spring, and I haven't had any feeding/extracting issues. I had issues when I was still using the stock recoil assembly, but ever since I threw in the 22# & 24# springs, it's been smooth sailing.

    Is there any chance you sprayed some One Shot or other case lube before sizing the brass, and didn't wipe it off completely? I use One Shot even with my carbide dies, and it can get a little gummy if I don't wipe down the cases well enough.
    Last edited: Sep 15, 2010
  14. Kegs

    Kegs Ol 8 fingers ;)

    Oct 26, 2009
    Cold side of conus
    Possibly a tighter crimp, possibly need heavier recoil spring (20# isn't enough spring for a load like that). I have no idea why you would need a heavier mag spring, but that could possibly throw it off too.

    By the way, 7.8gr. of 800x is a "max load" for the 200gr. XTP. You're running a 15% overload, but in my G29, the 9.0gr. runs great - around 1200 fps avg. (but that's with 350 primers, not 300s)

    Have a nice day.
    Last edited: Sep 15, 2010
  15. My reloads are clean so that's not an issue. I just got a new set of Wolff springs from 17, 19, 20, 22 & 24 pound. I'll figure it out.
  17. Fire_Medic

    Fire_Medic Polymer Butcher CLM

    May 19, 2008
    The Gunshine State
    Fix the crimp, you already saw how that fixed the one batch that would not feed reliably.

    As for the factory crimp die, if your dies are set-up right this is a non issue. Make sure your sizing die almost touches the shell plate and that your crimp is sufficient.

    What I have found is that Redding dies size the cases better, especially in 40SW/10MM.

    I run Redding Pro Series T/C dies in my 550B with no issues.

    Good luck.
  18. I'll check out the redding dies....I am probably going to get a progressive setup in a month or 2.