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#1 TyGuy

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Posted 26 April 2012 - 01:58 PM

I noticed a few small marks on the rifling near the chamber on my Glock 19. I don't know if this is normal, perhaps copper deposits, etc... I also don't know if it affects the accuracy. It is near the chamber end NOT the muzzle end, so perhaps it's not a big deal. I might get some copper cleaner to see if that does anything.

Perhaps I should posts some pictures?

Should I just shoot it bench rested to check accuracy, not worry about it, change out the barrel, etc...?

Thanks everyone!

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#2 TyGuy

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Posted 26 April 2012 - 01:59 PM

Oh, one more thing. I don't know if it is in fact DAMAGE, or just deposits, or marks from the bullets being loaded into the chamber. IDK. I just like to shoot things. :-)

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#3 sleepercaprice1

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Posted 26 April 2012 - 02:22 PM

Have you tried giving it a good cleaning? Glock barrels with the standard tenifer treatment are pretty tough. I have a couple with over 100,000 rounds through them that look fine. I have also seen one that was defective. Pictures might help.

#4 TyGuy

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Posted 26 April 2012 - 02:27 PM

I discovered it while cleaning. I'll get in there again, but it seems clean. I haven't cleaned it for about 500 rounds so it might have happened earlier.

I'll post some pics tonight.

Edited by TyGuy, 26 April 2012 - 02:27 PM.

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#5 Jeffrey

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Posted 26 April 2012 - 02:37 PM

Next thread title from TyGuy: My Glock exploded! :poke:

I'd give it a good cleaning to start. If accuracy has diminished, you should be able to find a replacement for fairly cheap online.
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#6 TyGuy

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Posted 26 April 2012 - 02:38 PM

LOL. I am trying to get to the range.

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#7 Buzzard

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Posted 26 April 2012 - 05:25 PM

I just marvel at how those plastic Glock barrels hold up.
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#8 TyGuy

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Posted 26 April 2012 - 05:26 PM

If it's scratched then it's my own fault. I don't want to say what I did, as ut is embarassing, but it was all me.

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#9 Bud

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Posted 26 April 2012 - 05:37 PM

My G19 also has them and I am pretty sure they are intentional and incidental to the hexagonal rifling

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#10 abolt243

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Posted 26 April 2012 - 06:26 PM

Sounds like both guns are ruined. Contact me for details and I'll take them off your hands before you get hurt trying to shoot them. Either of you happen to have a Glock 34 that's ruined too??

Nice guy that I am.

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#11 Vaden

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Posted 26 April 2012 - 06:29 PM

If be happy to look at it for a few weeks or months to test that barrel and see how it fits in my Desantis Intruder. Soak, brass brush, soak, brass brush, clean patch and see how it looks. You are shooting jacketed ammo right? Factory Glock barrels arent supposed to be used with lead rounds.
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#12 Getzapped

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Posted 26 April 2012 - 06:34 PM

It is not necessarily your fault if it is scratched! I have seen guns come out of the factory with scratches in the chamber walls. One was so bad that after the cartridge was detonated it expanded into the burr and would not extract. Had to use a cleaning jag to get the empty out and polish the chamber wall smooth.

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#13 GarandFan

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Posted 26 April 2012 - 06:58 PM

Yeah, why don't you bench it. If it won't group MOA then I suspect it's ruined. Abolt doesn't know what he's talking about ... you'll have to send that ruined Glock to me, instead!

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#14 TyGuy

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Posted 26 April 2012 - 07:21 PM

Lol. I am still a probationary member at my club, so O don't have a key yet. My sponsor is in Mexico right now, so I don't know when I'll get to bench it. I wouldn't throw it away for want of a new barrel. Even if the accuracy is worse than it was it's my primaey carry piece not a target pistol.

What size groups should I expect at 50ft or 25yds?

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#15 Bud

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Posted 26 April 2012 - 07:25 PM

I doubt that it is damage. I really suspect it's as a result of the manufacturing process. Mine appears to be three small 'pimples' that would leave a very distinct marking on any slug recovered.

It is probably an insidious attempt by the factory to make a recovered slug traceable to a specific weapon.

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#16 Getzapped

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Posted 26 April 2012 - 07:50 PM

Lol. I am still a probationary member at my club, so O don't have a key yet. My sponsor is in Mexico right now, so I don't know when I'll get to bench it. I wouldn't throw it away for want of a new barrel. Even if the accuracy is worse than it was it's my primaey carry piece not a target pistol.

What size groups should I expect at 50ft or 25yds?


What kind of rest? A ransom rest or sand baggin it? I would say that an average shooter can hold 2"-3" between 7-10yds standing! Ransom rest at 7-10 should be tighter like 1"- 1 1/2". I highly doubt that any imperfections at the breech end are gonn cause any bullets to be thrown! are the marks in the chamber or actually on the rifling? If they are in the chamber then no accurace will be lost. If they are right at the start of the lands and grooves, at detonation that bullet will be pushed right past them before the lands even grab the bullet. Got any pics?

edit: btw the only way you could be responsible for the scratches is if you jammed some kind of steel in there. no way brass or copper or lead can scratch that barrel. probably a tough 4140 steel, that crap is even hard to machine!

Edited by Getzapped, 26 April 2012 - 07:57 PM.

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#17 TyGuy

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Posted 26 April 2012 - 08:35 PM

I tried to get pics, but it didn't work so well. Let me check them again.


Ok... Here is what happened. I use bore snakes all ofthe time wi no problem. Well, I got distracted and used a 45acp bore snake in my G19 (9mm). It got stuck in the barrel. I saw the brush sticking out of the muzzle, so I figured it would be fine to just pull it backwards. I forgot that bore snakes have two sets of brushes. So, I pulled it backwards, reversing the brushes in the barrel.. Cest la vie. Lessoned learned.

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#18 TyGuy

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Posted 26 April 2012 - 08:45 PM

Photo attached. Unfortunately getting in there without getting blinded by the light is tough.

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#19 abolt243

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Posted 26 April 2012 - 08:55 PM

Just shoot the heck out of it~!! You didn't ruin it with a bore snake!! The brushes in the snakes are bronze. The "scratches" you see are probably just residue of the brush itself, not a physical scratch in the barrel steel. Run a couple thousand rounds of jacketed stuff through it (as has been noted, the Glock's funky rifling is said to be not compatible with lead bullets, truth or internet legend?) and it'll probably smooth right out. If not, at least you'll have fun!! You'll just have to choose a different tool to shoot those 300 yard groundhogs!!

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#20 Bud

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Posted 26 April 2012 - 08:59 PM

Photo attached. Unfortunately getting in there without getting blinded by the light is tough.


From that angle, it looks like it might be......a boy

Have you checked the fetal heartbeat yet?

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#21 TyGuy

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Posted 26 April 2012 - 09:48 PM

If you click on it the picture get bigger.

I don't use lead anyway due to wanting to limit my exposure to it. I got enough lead exposure in the AF.

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#22 TyGuy

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Posted 26 April 2012 - 09:49 PM

From that angle, it looks like it might be......a boy
Have you checked the fetal heartbeat yet?


Funny you mention that...as my wife is about 8 weeks along with our second. She is hoping that we'll have more of a revolver sized family, but I'm ok with an over under sized one.

As long as we are NOT XD sized we'll be ok. My friend shoots one. 19 rounds in a handgun? Really?

Edited by TyGuy, 26 April 2012 - 09:51 PM.

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#23 AFigmentOfYourImagination

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Posted 26 April 2012 - 10:18 PM


From that angle, it looks like it might be......a boy
Have you checked the fetal heartbeat yet?


Funny you mention that...as my wife is about 8 weeks along with our second. She is hoping that we'll have more of a revolver sized family, but I'm ok with an over under sized one.

As long as we are NOT XD sized we'll be ok. My friend shoots one. 19 rounds in a handgun? Really?


An XD with 19 mags? Or 18+1? My XD9 has 16 round mags. More importantly, congratulations on the new addition to the family. May ya'll have the best 9 months possible. Note: Make sure you check the transmission fluid in your vehicle before the trip to the hospital. Just trust me on this, it's a long story. ;)

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#24 TyGuy

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Posted 26 April 2012 - 10:19 PM

Yeah, it's 18+1 in 9mm.

We might do a homebirth, we don't know yet.

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#25 wilessiuc

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Posted 27 April 2012 - 04:23 AM

A homebirth? Glad my wife didn't want that. Can't imagine all that nastiness going on in my home.
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#26 Mr. Fife

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Posted 27 April 2012 - 08:56 AM

I think he is confusing an XD with a XDM.

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#27 TyGuy

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Posted 27 April 2012 - 09:24 AM

Same thing. There are Honda Accord EX, DX, and LXs but they are all still Honda Accords.

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#28 Getzapped

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Posted 27 April 2012 - 01:00 PM

It looks like fouling to me? I get the same look in my 1911 barrel. soak in hoppes 9 run the snake through it a couple times see if it comes out! it won't affect accuracy!

edit: make sure you use the 9mm snake! :)

Edited by Getzapped, 27 April 2012 - 01:01 PM.

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#29 TyGuy

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Posted 27 April 2012 - 01:07 PM

Soak what in hoppes? The barrel, the snake, my feet?

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#30 Uncle Harley

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Posted 27 April 2012 - 01:29 PM

I don't know how a glock barrell is supposed to be incapatable with a lead slug? They might get fouled quickly, but what barrell doesn't when shooting lead. heck " they" say not to shoot rifled shotgun slugs out of a Rifled slug barrells, but I kill deer every yr with that setup and sometimes at great distances.
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