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Old 04-13-2015, 22:52   #1
Willoughby
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g20 help please

calling all glockophiles I need input please
my gen 3 g20 jams in the form of a double feed at least once a mag
I assume its from the rsa being to weak -allowing slide to hit frame hard enough to dislodge a round from the mag -
then it picks another round up as it comes back by ,causing a double feed jam
- ==maybe Im wrong == any thoughts appreciated
I shoot warm hand loads -180xtps over 9.5gr longshot
the primers and the brass look fine
so its not to warm -"still working my way up"
it runs fine on 7.5gr and factory ammo -(40sw velocity stuff)
I don't want 40sw performance from a 10
if I cant shoot full power loads in it then a 10 is of no value to me _ Ill just shoot my 45
I have a 20lb rsa in it now -and have swapped the factory rsa back and forth with same results
Im thinking l a 24 lb rsa and 10% mag springs may fix my double feed issue ??
at 1st I didnt like the square ugly hammerless thing but now
I kinda like my glock but if I cant get it to run right its of no use
dang, I really wanted a full power 10 that works like it should and Im not brand loyal Im function over form loyal
mods( not-factory parts ) -ext slide release and take down bar
3.5 connector
fp safety spring
fp safety spring
trigger spring
rsa
it does same thing with all the original parts back in it
I can swap em out in 5min

should I try 24 lb rsa and 10% mag springs or just trade it in on a gen4
my buddy has a gen4 that hasn't jammed with warm loads (so far)
I know there are dual springs available for gen 3's
but I cant see them helping with warm ammo without being stronger

thanks for any input
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Old 04-14-2015, 19:43   #2
Ammunition Attrition
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Posts: 101
Oh, Willoughby, I would not get rid of that gen 3. Get a gen 4, sure, but don't deep six the 3!
Try the 22 and 24lb springs, sure. I do like the added very slight "give" factor of a Jager hard poly rod instead of steel, but that's for another ten million threads.
Longshot powder to me produces a harsher recoil for less velocity than does either 800X or Viht's N350. The pressure's what you've got to watch as it'll find any weakness in your brass and I sure wouldn't shoot it max in the open OEM Glock chamber. The one investment I'd never change Glock-wise is my use of KKM barrels and their more restrictive chambers for running hotter loads--EDIT NOTE--the KKM chamber will still allow the "bulge" near the web/head of the case when your'e running high, though, believe me. Me, for pracitcal hunting purposes, 9-9.3 of 800X is PERFECT with 1280-1320fps and a 180 through a 6" KKM, and I'm running i'd guess just around 33-34000psi which is more than high enough, thank you, especially if I've used it a couple times and checked for stress or extractor claw/ejector deep scratches which happen with one Glock more than the next.
BTW per your feeding, your "timing" will change with the different springs, but I have noticed some Glock mags just don't feed consistently well and a couple of mine freeze on the last round no matter the load. Nix them or give 'em to someone you don't like this tax season. I bet you settle on a 24 if you want to run hot 'n heavies only, though it'll function with a moderate one, too.

Last edited by Ammunition Attrition; 04-14-2015 at 20:01.. Reason: max p=37500
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Old 04-14-2015, 21:59   #3
orangeride
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So your gun is popping two fresh rounds from the mag? If that's the case I'd bet a bad mag. In 50k rounds through my g20 I've never had that happen. I'd try a fresh oem rsa and a fresh mag. I've had plenty of luck shooting hot loads from my oem barrel. (2012 date) I don't get any smiles till I'm way over book. You will get less overall case stretch with an aftermarket barrel though.

Last edited by orangeride; 04-14-2015 at 22:02..
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Old 04-14-2015, 22:07   #4
Bongo Boy
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You've changed out more parts than I was aware the G20 actually had, and with the exception of the 3.5 connector it's not clear what problems were being addressed. I would go back to stock everything except the connector, and see if there's a problem that needs fixing.

I haven't had this problem, but I've had nosedives, which bugs the crap out of me. Hard to imagine how some of these things happen. Your reasoning sounds pretty good to me--I never would have thought of that. But still, I would tend to think goofed-up magazine springs first, not the need for more aftermarket parts or a Gen 4 to solve this one.
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Last edited by Bongo Boy; 04-15-2015 at 01:12..
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Old 04-15-2015, 01:17   #5
Bongo Boy
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Quote:
Originally Posted by Ammunition Attrition View Post
Longshot powder to me produces a harsher recoil for less velocity than does either 800X or Viht's N350.
Yes, and muzzle blast and broken parts. I won't run the stuff ever again. Looks wonderful on paper, but has been a miserable and expensive experience for me in reality.
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Old 04-16-2015, 08:51   #6
WeeWilly
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Quote:
Originally Posted by Willoughby View Post
calling all glockophiles I need input please
my gen 3 g20 jams in the form of a double feed at least once a mag
I assume its from the rsa being to weak -allowing slide to hit frame hard enough to dislodge a round from the mag -
then it picks another round up as it comes back by ,causing a double feed jam
- ==maybe Im wrong == any thoughts appreciated
I shoot warm hand loads -180xtps over 9.5gr longshot
the primers and the brass look fine
so its not to warm -"still working my way up"
it runs fine on 7.5gr and factory ammo -(40sw velocity stuff)
I don't want 40sw performance from a 10
if I cant shoot full power loads in it then a 10 is of no value to me _ Ill just shoot my 45
I have a 20lb rsa in it now -and have swapped the factory rsa back and forth with same results
Im thinking l a 24 lb rsa and 10% mag springs may fix my double feed issue ??
at 1st I didnt like the square ugly hammerless thing but now
I kinda like my glock but if I cant get it to run right its of no use
dang, I really wanted a full power 10 that works like it should and Im not brand loyal Im function over form loyal
mods( not-factory parts ) -ext slide release and take down bar
3.5 connector
fp safety spring
fp safety spring
trigger spring
rsa
it does same thing with all the original parts back in it
I can swap em out in 5min

should I try 24 lb rsa and 10% mag springs or just trade it in on a gen4
my buddy has a gen4 that hasn't jammed with warm loads (so far)
I know there are dual springs available for gen 3's
but I cant see them helping with warm ammo without being stronger

thanks for any input
The load is warm, but not outside the capabilities for reliable feed with a stock gun.

Does the double feed happen with all the magazines you try?
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Old 04-24-2015, 20:00   #7
Willoughby
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I have 3 mags and I borrowed a mag from a friend all do same thing so I don't think its a mag issue -but I did order 10% mag springs when I ordered 2 new recoil springs a 22# and a 24# from wolfe springs , I have some 800x I run in my 45 , I could try to change powders, but Im gonna wait and try the recoil springs first, and I really appreciate all the responses- thanks guy's
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