Glock 21 Malfunctions

[EddieNFL]

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?

 

[REAPER4206969]

Reloads?

 

[Apocalypse-Now]

bare sto's aren't drop in. it needs to be fitted properly.

 

[EddieNFL]

Reloads?

Yes. Same ones that work in several 1911s and the original barrel.

 

[EddieNFL]

bare sto's aren't drop in. it needs to be fitted properly.

How do you increase the size?

 

[Hangingrock]

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]

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]

no, it's common with improperly fit bar-sto barrels.

 

[EddieNFL]

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]

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]

I follow what you're saying, but if that's the case, the Glock barrel isn't fitted correctly, either.

 

[Hunt480]

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]

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]

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]

Well, then it's the aftermarket barrel.

 

[RugerMcMarlin]

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]

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]

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]

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]

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]

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]

Is this common with Glocks?

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

 

[EddieNFL]

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]

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]

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.