Glock 21 Malfunctions


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EddieNFL
May 25, 2011, 10:19 PM
A friend installed a Barsto barrel in his Glock to use with cast bullets. He was experiencing a failure to extract about one out of three rounds. The case would extract about 2/3s, the extractor would slip out of the extraction groove and the slide would lock open on the next round in the mag.

We did a bit of trouble shooting and learned the extracted case was catching on the bullet shoulder of the next round (semi-wadcutters). We disassembled the gun and reinstalled the stock barrel. The same thing happens, but apparently the stock barrel doesn't drop far enough to cause a malfunction. The differences in barrel dimensions are slight but noticeable (the Barsto is smaller).

Is this common with Glocks?

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REAPER4206969
May 25, 2011, 10:24 PM
Reloads?

Apocalypse-Now
May 25, 2011, 10:25 PM
bare sto's aren't drop in. it needs to be fitted properly.

EddieNFL
May 25, 2011, 10:33 PM
Reloads?
Yes. Same ones that work in several 1911s and the original barrel.

EddieNFL
May 25, 2011, 10:34 PM
bare sto's aren't drop in. it needs to be fitted properly.
How do you increase the size?

Hangingrock
May 25, 2011, 10:35 PM
I have a Bar-Sto barrel in my G21. The Bar-Sto barrel when acquired was represented as a semi-drop-in requiring minor fitting. You may want to have a qualified person do the fitting. Properly fitted you should have no problems. One should note that there is a noticeable difference in the feed ramp angle with the Bar-Sto having a steeper angle as opposed to the OEM barrel feed ramp.

EddieNFL
May 25, 2011, 10:44 PM
Apparently, my first post wasn't very clear.

When the barrel unlocks and moves out of battery, it causes the case being extracted to catch on the next round in the magazine. I can make the gun work using metal tape to limit the amount of drop, but that is temporary, at best.

My original question was, "Is this common with Glocks?"

Apocalypse-Now
May 25, 2011, 10:50 PM
no, it's common with improperly fit bar-sto barrels.

EddieNFL
May 25, 2011, 10:56 PM
Okay, so how do you fit the barrel to keep it from dropping to far? Last I knew fitting required removed metal, not adding.

Anyone have any actual knowledge?

Apocalypse-Now
May 25, 2011, 10:58 PM
the barrel should have come with fitting instructions. the barrel hood forward of the chamber (on top) needs to be relieved.

otherwise it'll dip the barrel down too low during cycling ;)

EddieNFL
May 25, 2011, 11:04 PM
I follow what you're saying, but if that's the case, the Glock barrel isn't fitted correctly, either.

Hunt480
May 25, 2011, 11:13 PM
Im having feeding problems from a Lone Wolf barrel I just got a few days ago for my Glock 20. I'm gonna send it back if they can't fix it they can keep it. Its ashame though because it was very accurate when you can get it to load and shoot. I have never had this many hang ups with an auto.

REAPER4206969
May 25, 2011, 11:15 PM
A-N is right about that barrel being semi-drop in.

I however, would look to the reloads first as that is the most likely cause of the problem. Check the OAL and other specs.

EddieNFL
May 25, 2011, 11:18 PM
I however, would look to the reloads first as that is the most likely cause of the problem. Check the OAL and other specs.



Ammo is within specs. Chambers fine. Works in several match grade 1911 barrels and the original Glock barrel.

REAPER4206969
May 25, 2011, 11:54 PM
Well, then it's the aftermarket barrel.

RugerMcMarlin
May 26, 2011, 06:12 AM
Yeah, got some actual knowledge:

EDDIE NFL It sounds like you already know everything. You have argued with 3 or 4 good solid answers. Do you want to argue or fix your gun?:banghead:

A Glock that Malfunctions/ a non Glock part.....Hmmm.

Reloads that must be perfect because they just happen to work in 2 other guns, NOT GLOCKS.

Put original barrel in and it works..................

Three people tell you Barsto barrel must be fit to gun!

If you can EYEBALL a Glock barrel and a Barsto barrel, and can tell accurately if they are both in tolerance, then you should have noticed it wouldn't work
when you unwrapped it. NOTE: if your curious what brought this on. Read post 7 and 9, For answer read post 8 slowly.

EddieNFL
May 26, 2011, 07:38 PM
Ruger,

Thanks for the input. Review my posts and you'll find it's not my gun, I eyeballed the barrels and could see a difference (had no way to measure at the time) and the ammo worked fine in the same gun with a Glock barrel. And all I ever asked was it normal for the extracted case to strike the next round.

Talked to my buddy at lunch today. Glock armorer says the barrel fitting isn't the problem and doubtful the ammo is. Will post more info as it becomes available.

mossberg835
May 26, 2011, 10:02 PM
Been shootin glock 21's since they have been in the country( yes 25 yrs). If you have rcbs calipers for measuring case length ,use the depth gauge on them to measure the depth of the chamber on both barrels and if that is the same just maybe the crimp die isn't putting the right squeeze on the case mouth . If all that checks out than my suggestion is send back the bar-sto barrel and either shoot the factory barrel or get a lone wolf barrel . As long as you clean the barrel ,lead shouldn't be a problem.

EddieNFL
May 26, 2011, 10:49 PM
Didn't have a caliper at the range, but the chamber seem to be in spec. We fired about 60 or 70 rounds; all chambered easily. The barrel was very clean.

ken grant
May 26, 2011, 10:59 PM
I have been shooting glocks for many years and never had one that would work well with SWC bullets. The ejecting cases catch on the next bullets shoulder. Even when they eject properly, if you would look at the rd. that was under it you can see marks on the shoulder of the bullet.

The Glocks hold the ammo very high in relationship to many pistols and out of many different models and calibers I have shot all have acted the same with SWC bullets. I now only use RN bullets in my Glocks.

mossberg835
May 26, 2011, 11:01 PM
You could check Lone Wolf for a different barrel, have heard great feedback on them. And they are fairly cheap. I really like the barrel lettering on the muzzle that says "wait for the flash"

Ben86
May 26, 2011, 11:57 PM
Is this common with Glocks?

No, but it is common with aftermarket barrels. Take it to a gunsmith to have it properly fitted.

EddieNFL
May 27, 2011, 08:43 AM
I have been shooting glocks for many years and never had one that would work well with SWC bullets. The ejecting cases catch on the next bullets shoulder. Even when they eject properly, if you would look at the rd. that was under it you can see marks on the shoulder of the bullet.

The Glocks hold the ammo very high in relationship to many pistols and out of many different models and calibers I have shot all have acted the same with SWC bullets. I now only use RN bullets in my Glocks.
This may be one of those instances. We reinstalled the original barrel, and while it functioned, it was still striking the next round, just not as severely.

mossberg835
May 27, 2011, 11:44 PM
Not looking for trouble but you can spend a lot of time and money just getting an after market barrel to cycle as well as the stock one , kind of reinventing the wheel.If you cast your own bullets ,try waterdropping them . Just cast like you normally would ,but when you open the mold to drop the bullets . Drop them in a bucket of cold water. What you get is a cast bullet you can't even dent with your thumb nail. By doing this you'll find there's very little lead fowling . And if you scrub the barrel out good after shooting it's not a problem.

Hangingrock
May 28, 2011, 04:15 PM
http://i214.photobucket.com/albums/cc277/lowflash/1911SWCA.jpg
My example of the Glock G21 with a properly fitted Bar-Sto barrel has had no feeding issues with SWC profile. I can only speak for my example others may be problematic.

EddieNFL
May 28, 2011, 05:46 PM
My buddy is waiting for a return call. The barrel is fitted properly, but appears to be out of spec. It will run with a couple layers of metal tape between the lugs. I was surprised to learn the stock barrel has the same issue, but to a lesser degree.

EddieNFL
May 28, 2011, 05:51 PM
Hardness isn't an issue with these bullets. They're around 18 brinell. I've heat treated cast to 20 plus for TCs and XPs, but that's a lot of trouble. Plus he shoots about 20K-25K per year...that's a lot of casting.

EddieNFL
May 28, 2011, 05:52 PM
http://i214.photobucket.com/albums/cc277/lowflash/1911SWCA.jpg
My example of the Glock G21 with a properly fitted Bar-Sto barrel has had no feeding issues with SWC profile. I can only speak for my example others may be problematic.

No problems feeding.

EddieNFL
June 11, 2011, 08:41 PM
My buddy contacted BarSto and tried their suggestions. After talking with the armorer they agree it's not a fitting issue. It will run with RN or RNFP, but the extracted case still drags across the next round. The stock barrel still does the same, but not as severely.

The SWCs will not work in this gun. The same batch of ammo has been fired in two other 21s, several 1911s and a SIG without issue. Until a couple days ago we had not noticed the extracted case was hitting the nose of the bullet as well as the shoulder.

BarSto asked for the barrel and a batch of the ammo. We'll see.

Got_Lead?
June 11, 2011, 09:39 PM
EddieNFL:

OK, I gotta jump in on this one. You are not alone with .45 SWC extraction problems in pistols using the modified Browning locking system. I have an XD-45, and experience the same problem with SWC's. The problem is that the barrel breech cams down far enough during the initial unlocking motion, that the lip of the extracing case head hangs up on the shoulder of next round in the magazine. It's interesting to know the Glock 21 does this too. I have heard the XDm45 will feed SWC's, but I haven't shot one yet.

I was kind of upset when I found this out. I had just purchased the XD, after shooting a friend's, and had high expectations. However, on my first shooting session, the first round out the pipe jammed a case in the action miserably, real mangled like. I proceded to try several more with identical results. These cases failed to clear the action too, kind of like a stovepipe, but they were pretty mangled up, the rims were bent back by the extractor, beyond all hope of ever reloading them. I cycled the action by hand, watching for what was wrong, but all worked properly. Finally I could see what was going on, and was kind of bummed because I couldn't use my pet SWC's.

Anyway, all ended well, I ordered a Lee 200 grain round nose flat point boolit mold. There is enough of an ogive on this boolit that the extracted case lip glides over it, no more problems. And, I just love this Boolit, I may just not use my SWC mold again.

So long story short, the little bit of trimming you did in fitting your aftermarket barrel really has nothing to do with how far the breech is designed to drop during unlocking. It's just the way the gun works. If you are wanting to shoot lead, try the Lee 200 RNFP's, I love them.

Here's my XD and a 25 yard target using the RNFP's, I think with bit more load development and a steadier rest, the gun is capable of smaller groups.

http://i1187.photobucket.com/albums/z398/1homebrewed/PICT0008a-1.jpg

Got_Lead?
June 11, 2011, 09:57 PM
EddieNFL:

OK, I gotta jump in on this one. You are not alone with .45 SWC extraction problems in pistols using the modified Browning locking system. I have and XD-45, and experience the same problem with SWC's. The problem is that the barrel breech cams down far enough during the initial inlocking motion, that the lip of the extracing case head hangs up on the shoulder of next round in the magazine. It's interesting to know the Glock 21 does this too. I have heard the XDm45 will feed SWC's, but I haven't shot one yet.

I was kind of upset when I found this out. I had just purchased the XD, after shooting a friend's, and had high expectations. However, on my first shooting session, the first round out the pipe jammed a case in the action miserably, real mangled like. I proceded to try several more with identical results. These cases failed to clear the action too, kind of like a stovepipe, but they were pretty mangled up, the rims were bent back by the extractor, beyond all hope of ever reloading them. I cycled the action by hand, watching for what was wrong, but all worked properly. Finally I could see what was going on, and was kind of bummed because I couldn't use my pet SWC's.

Anyway, all ended well, I ordered a Lee 200 grain round nose flat point boolit mold. There is enough of an ogive on this boolit that the extracted case lip glides over it, no more problems. And, I just love this Boolit, I may just not use my SWC mold again.

So long story short, the little bit of trimming you did in fitting your aftermarket barrel really has nothing to do with how far the breech is designed to drop during unlocking. It's just the way the gun works. If you are wanting to shoot lead, try the Lee 200 RNFP's, I love them.

Here's my XD and a 25 yard target using the RNFP's, I think with bit more load development and a steadier rest, the gun is capable of smaller groups.

http://i1187.photobucket.com/albums/z398/1homebrewed/PICT0008a-1.jpg

Got_Lead?
June 11, 2011, 11:02 PM
Oops, how did that one go in twice? Sorry, my bad.

EddieNFL
June 12, 2011, 09:16 AM
http://i1187.photobucket.com/albums/z398/1homebrewed/PICT0008a-1.jpg

How did you get those three holes on the left side perfectly spaced and aligned?

12131
June 12, 2011, 09:30 AM
How did you get those three holes on the left side perfectly spaced and aligned?
We have a comedian, here.:evil:

voyager4520
June 13, 2011, 02:48 PM
Glocks don't cycle wad-cutters. Period.

If you somehow do get your Glock to cycle wad-cutters or SWC's like Hangingrock did, you're lucky.

EddieNFL
June 13, 2011, 10:01 PM
Glocks don't cycle wad-cutters. Period.

If you somehow do get your Glock to cycle wad-cutters or SWC's like Hangingrock did, you're lucky.
Barsto swears they will. They work in the factory barrel, but lead the bore pretty badly.

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