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Posted: 4/8/2016 6:53:49 PM EST
Sig P220 barrel. Rifling good on one side, barrel polished smooth on the other:



Link Posted: 4/8/2016 6:55:27 PM EST
Bore is not concentric with the barrel
Link Posted: 4/8/2016 6:56:08 PM EST
That ain't kosher
Link Posted: 4/8/2016 6:56:29 PM EST
ever so slightly bent barrel?
Link Posted: 4/8/2016 6:57:21 PM EST
Weird. Tag for explanation.
Link Posted: 4/8/2016 6:57:41 PM EST
How does it shoot?
Link Posted: 4/8/2016 6:58:05 PM EST
stop curving your bullets!
Link Posted: 4/8/2016 6:58:45 PM EST
I'd like to know the round count what type of ammo was run through it.
Link Posted: 4/8/2016 6:59:32 PM EST
Link Posted: 4/8/2016 7:01:41 PM EST
Link Posted: 4/8/2016 7:02:25 PM EST
Link Posted: 4/8/2016 7:03:56 PM EST
Sure it's not just leaded up?
Link Posted: 4/8/2016 7:08:25 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By forker:
Sure it's not just leaded up?
View Quote

I;m going to go with this...de lead the hell out of it first...then check the rifling
Link Posted: 4/8/2016 7:10:45 PM EST
Wear from a steel cleaning rod
Link Posted: 4/8/2016 7:11:11 PM EST
[Last Edit: 4/8/2016 7:11:57 PM EST by Et2ss]
Originally Posted By AJK07734:
Originally Posted By forker:
Sure it's not just leaded up?
View Quote

I;m going to go with this...de lead the hell out of it first...then check the rifling
View Quote


and if that doesn't work, Top Gun Supply has you covered
Link Posted: 4/8/2016 7:11:39 PM EST
Gravity pulls the bullets down in the barrel causing the wear you see
Link Posted: 4/8/2016 7:14:08 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By DnPRK:
Wear from a steel cleaning rod
View Quote


Possibly... People have no idea how hard cleaning with crap equipment is on a barrel.

I still agree with Mark Westrom's opinion that "barrel break in" is a load of shit and only causes unnecessary wear.
Link Posted: 4/8/2016 7:18:25 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By lokifox:


Possibly... People have no idea how hard cleaning with crap equipment is on a barrel.

I still agree with Mark Westrom's opinion that "barrel break in" is a load of shit and only causes unnecessary wear.
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By lokifox:
Originally Posted By DnPRK:
Wear from a steel cleaning rod


Possibly... People have no idea how hard cleaning with crap equipment is on a barrel.

I still agree with Mark Westrom's opinion that "barrel break in" is a load of shit and only causes unnecessary wear.




This is why I went to boresnakes.
Link Posted: 4/8/2016 7:24:27 PM EST
Sandpapered bore cleaning attemps.
Link Posted: 4/8/2016 7:31:20 PM EST


Was the gun fired whilst on a magnetic treadmill...?




Link Posted: 4/8/2016 7:33:01 PM EST
"Lead free" or "non toxic" ammo / primers??
Link Posted: 4/8/2016 7:49:31 PM EST
[Last Edit: 4/8/2016 7:52:10 PM EST by Dipper]
When did you notice this? I mean did you ever check it before and the barrel appeared normal and then you looked again and it looked as pictured?

It was either made that way and was a bad barrel from the get go... it's happened before on other handguns OR, improper cleaning practices/cleaning rod wear. You are not going to see that any other way that I know of..... certainly won't see that from shooting.

ETA: How does it shoot? Has the accuracy gone down hill or does it shoot the way it always did? Is it accurate or as accurate as it's always been?
Link Posted: 4/8/2016 7:52:09 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Dipper:
When did you notice this? I mean did you ever check it before and the barrel appeared normal and then you looked again and it looked as pictured?

It was either made that way and was a bad barrel from the get go... it's happened before on other handguns OR, improper cleaning practices/cleaning rod wear. You are not going to see that any other way that I know of..... certainly won't see that from shooting.
View Quote



I had an Olympic 1911 barrel just like that new.

Link Posted: 4/8/2016 7:52:24 PM EST
Can you show us a picture looking straight through from each end?
Link Posted: 4/8/2016 7:53:48 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By bowbender7:



I had an Olympic 1911 barrel just like that new.

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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By bowbender7:
Originally Posted By Dipper:
When did you notice this? I mean did you ever check it before and the barrel appeared normal and then you looked again and it looked as pictured?

It was either made that way and was a bad barrel from the get go... it's happened before on other handguns OR, improper cleaning practices/cleaning rod wear. You are not going to see that any other way that I know of..... certainly won't see that from shooting.



I had an Olympic 1911 barrel just like that new.



I had a S&W barrel like that too...... brand new with zero rounds on it.
Link Posted: 4/8/2016 7:54:36 PM EST
Use a dental pic to check if it's fouling or actually erosion.
Link Posted: 4/8/2016 7:56:43 PM EST
Weird stuff there. No idea as to what might cause that but in for the opinions/determination.
Link Posted: 4/8/2016 7:57:00 PM EST
[Last Edit: 4/8/2016 7:57:41 PM EST by LePew]
That's *really* weird if it's from shooting.
The black finish isn't worn out on the rest of the muzzle so the round count can't be terribly high.

Did this pistol get stored on a muzzle rod often?

Is the land in question on top or bottom of the muzzle, or the side?

ETA: your post says 'side'.

Link Posted: 4/8/2016 7:58:58 PM EST
View Quote


Yes, in a NFA firearm.

Poorly mounted can was causing it.
Link Posted: 4/8/2016 8:06:14 PM EST
If not lead build up barrel is possibly shot out. I had a shot out barrel once in a taurus 92, it looked like that.
Link Posted: 4/8/2016 8:17:25 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By lokifox:


Possibly... People have no idea how hard cleaning with crap equipment is on a barrel.

I still agree with Mark Westrom's opinion that "barrel break in" is a load of shit and only causes unnecessary wear.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By lokifox:
Originally Posted By DnPRK:
Wear from a steel cleaning rod


Possibly... People have no idea how hard cleaning with crap equipment is on a barrel.

I still agree with Mark Westrom's opinion that "barrel break in" is a load of shit and only causes unnecessary wear.

You really think that's from cleaning equipment? Cmon man.

Posted Via AR15.Com Mobile
Link Posted: 4/8/2016 8:19:22 PM EST
Was the rifling ever right? Factory defect barrel?
Link Posted: 4/8/2016 8:26:37 PM EST
Do not use steel wool when cleaning a barrel.


Link Posted: 4/8/2016 8:33:36 PM EST
Link Posted: 4/8/2016 8:35:32 PM EST
Lol there is no way a cleaning rod wore down the rifling completely in a barrel

Some of you people
Link Posted: 4/8/2016 8:38:50 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By M4ger:
I'd like to know the round count what type of ammo was run through it.
View Quote

Link Posted: 4/8/2016 8:44:26 PM EST
It's weird that 1 rifling is missing. Can you take a picture farther down the bore?
Link Posted: 4/8/2016 8:49:50 PM EST
Looks to me like it was manufactured wrong.

That's not what over-cleaning looks like
Link Posted: 4/8/2016 8:54:12 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Skg_Mre_Lght:
Improper cleaning from the muzzle end.
View Quote


This would be my guess.
Link Posted: 4/8/2016 8:55:36 PM EST
Slow down with the info, OP. I'm having trouble processing all this!
Link Posted: 4/8/2016 8:58:59 PM EST
We're ya cleaning it with one of these?

Link Posted: 4/8/2016 9:05:07 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Et2ss:
How does it shoot?
View Quote

Link Posted: 4/8/2016 9:08:21 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Chapman:


With what, tungsten carbide?

Cleaning rods can contribute to wear, but for fucks sake, you know how long you'd have to grind away at that barrel with a very hard steel cleaning rod to make the rifling disappear on one side of a very hard steel barrel?
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Chapman:
Originally Posted By Skg_Mre_Lght:
Improper cleaning from the muzzle end.


With what, tungsten carbide?

Cleaning rods can contribute to wear, but for fucks sake, you know how long you'd have to grind away at that barrel with a very hard steel cleaning rod to make the rifling disappear on one side of a very hard steel barrel?





THIS x2
Link Posted: 4/8/2016 9:13:27 PM EST
Link Posted: 4/8/2016 9:13:41 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Skillshot:
Slow down with the info, OP. I'm having trouble processing all this!
View Quote


Gun is 7 or 8 years old. 99% of the stuff shot through it has been 230gn FMJ / 5.0gn of Bullseye / CCI large primer. I clean from the chamber with an aluminum rod but I'm not in the habit of cleaning after every range trip. I gave it to a Sig-trained armorer gunsmith a couple weeks ago for a detail clean and total spring replacement. He sent the pics and informed me that the barrel was shot out in a weird way. Not sure if accuracy has gone down-hill. I haven't shot it much lately but was planning to which is why I was having the work done.
Link Posted: 4/8/2016 9:15:29 PM EST
[Last Edit: 4/8/2016 9:16:35 PM EST by Tazaroo]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MonkeyFist:
Bore is not concentric with the barrel
View Quote


FPNI perhaps unless improper cleaning is being utilized.
Link Posted: 4/8/2016 9:24:04 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AR45fan:


Gun is 7 or 8 years old. 99% of the stuff shot through it has been 230gn FMJ / 5.0gn of Bullseye / CCI large primer. I clean from the chamber with an aluminum rod but I'm not in the habit of cleaning after every range trip. I gave it to a Sig-trained armorer gunsmith a couple weeks ago for a detail clean and total spring replacement. He sent the pics and informed me that the barrel was shot out in a weird way. Not sure if accuracy has gone down-hill. I haven't shot it much lately but was planning to which is why I was having the work done.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AR45fan:
Originally Posted By Skillshot:
Slow down with the info, OP. I'm having trouble processing all this!


Gun is 7 or 8 years old. 99% of the stuff shot through it has been 230gn FMJ / 5.0gn of Bullseye / CCI large primer. I clean from the chamber with an aluminum rod but I'm not in the habit of cleaning after every range trip. I gave it to a Sig-trained armorer gunsmith a couple weeks ago for a detail clean and total spring replacement. He sent the pics and informed me that the barrel was shot out in a weird way. Not sure if accuracy has gone down-hill. I haven't shot it much lately but was planning to which is why I was having the work done.
Wow, I was waiting for more info on those pics. I have never seen anything like that, nor would I have thought it even possible....

Link Posted: 4/8/2016 9:27:52 PM EST
Tag for info.
Link Posted: 4/8/2016 9:33:15 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AZ_Sky:
Wow, I was waiting for more info on those pics. I have never seen anything like that, nor would I have thought it even possible....


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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AZ_Sky:
Originally Posted By AR45fan:
Originally Posted By Skillshot:
Slow down with the info, OP. I'm having trouble processing all this!


Gun is 7 or 8 years old. 99% of the stuff shot through it has been 230gn FMJ / 5.0gn of Bullseye / CCI large primer. I clean from the chamber with an aluminum rod but I'm not in the habit of cleaning after every range trip. I gave it to a Sig-trained armorer gunsmith a couple weeks ago for a detail clean and total spring replacement. He sent the pics and informed me that the barrel was shot out in a weird way. Not sure if accuracy has gone down-hill. I haven't shot it much lately but was planning to which is why I was having the work done.
Wow, I was waiting for more info on those pics. I have never seen anything like that, nor would I have thought it even possible....




Do you think Sig might consider it a warranty issue and offer a replacement?
Link Posted: 4/8/2016 9:47:40 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By p226guy:
Lol there is no way a cleaning rod wore down the rifling completely in a barrel

Some of you people
View Quote
maybe he cleans it while watching porn...
Link Posted: 4/8/2016 9:53:31 PM EST
[Last Edit: 4/8/2016 9:54:25 PM EST by DriftPunch]
Can you confirm that is was ever correct???

Broken/damaged broach? If hammer forged, broken mandrel?
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