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SR9 Barrel Peening Issue---How many have it?

This is a discussion on SR9 Barrel Peening Issue---How many have it? within the Ruger Pistols forums, part of the Pistol & Revolver Forum category; Had my new SR9 out twice now---less than 150 rounds---the barrel is now so peened the gun is now inoperable--all were WWB 115gn target loads. ...


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Old June 1st, 2009, 07:39 AM   #1
 
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SR9 Barrel Peening Issue---How many have it?

Had my new SR9 out twice now---less than 150 rounds---the barrel is now so peened the gun is now inoperable--all were WWB 115gn target loads.

Calling Ruger here in a minute and pretty pissed.

Gun is a post recall OD model in the 330-42xxx range.



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Old June 1st, 2009, 09:12 AM   #2
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rugerfreak,

Take a look at the threads from another Ruger forum below.

http://www.rugerforum.com/phpBB/view...5bba3d552ef7a1
http://www.rugerforum.com/phpBB/viewtopic.php?t=20880
http://www.rugerforum.com/phpBB/viewtopic.php?t=19774

Not sure what it all means but it may be good information for your discussions with Ruger. Many of the responses are nonsensical which I guess is typical in some forums but they are definitely one of the reasons I frequent this one!

I hope this helps! Good luck!
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Old June 1st, 2009, 03:07 PM   #3
 
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I looked at those threads and I'm still unclear what peening is? I have an SR9 probably with 500 rounds through it and it seems to be fine...but I'll strip it tonite anyway
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Old June 1st, 2009, 07:40 PM   #4
 
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Quote:
Originally Posted by offcamber View Post
I looked at those threads and I'm still unclear what peening is? I have an SR9 probably with 500 rounds through it and it seems to be fine...but I'll strip it tonite anyway
I'm not a gunsmith, but I think it's where the barrel hood slams into the slide and starts to deform. The last link that BronxBoy posted had some pretty good pictures.
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Old June 2nd, 2009, 04:53 AM   #5
 
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I see it now...I'll check mine when I get home but I don't think I have that problem.
Mine is a post recall serial number.
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Old June 2nd, 2009, 06:18 AM   #6
 
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Mine is a post recall gun too----seems they need another recall for the peening issue.
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Old June 2nd, 2009, 06:24 AM   #7
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Good morning!

Peening is a process that reshapes or reforms metal. It is a cold process that uses mechanical force such as blows by a hammer, impact by forced shot (shot peening; glass peening) or other impact processes. In mechanics it is a useful process for relieving stresses after welding, grinding and other machining processes. Peening will also alter temper/hardness in the worked metals. The term takes on other meanings but generally peening results in the reshaping of metal.

When you set a rivet you are actually peening one end to either roll it or expand it to form a grip between two or more pieces. If the slide of a firearm is impacting the barrel as it cycles the force can be great enough to start deforming the barrel at the point of impact. The play of the slide, the play of the barrel, the angle of impact and the hardness of the metals involved all play a part in whether this will happen, how rapidly the deformation will occur and how severely the deformation will be.

Surface scars and slide marks are not signs of peening. Well defined indentations and specifically raised metal are signs of peening. I have never done a hardness test on a handgun barrel so I don not know the normal ranges of hardness for gun barrel steel. Peening on the surface of the barrel may or may not affect the bore dimensions but there is one thing that peening will do and that is to change the temper/hardness of the barrel steel. In my opinion, either situation is cause for concern but change in hardness is not easy to determine and peening could cause weaknesses in the area of deformation.

Changing the barrel would cure the symptoms but not necessarily the disease! The cure for the disease lies in the interaction and the alignment between the slide, the frame and the barrel. This analysis and fix is best left to the factory or an experienced gunsmith IMHO.
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Old July 12th, 2010, 11:24 AM   #8
 
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Jus curious does anyone know what serial nbr did they correct the barrel peening issue? mine shows a very small barrel peening issue, i have 1K rounds thru mine.

My SR9 is a 330-66xxx
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Old July 12th, 2010, 12:38 PM   #9
 
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Could it have to do with the supposed use of casting for the barrels for these?

I hate to sound like a "basher" but I had been thinking of picking up an SR9 to use as a range shooter but after reading quite a few posts on this forum about problems with them, I'm really leaning toward looking for a used P89 now.
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Old July 12th, 2010, 01:23 PM   #10
 
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I've fired about 350 rounds through mine. Zero peening and zero malfunctions of any kind.
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Old July 12th, 2010, 05:06 PM   #11
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Smile

The peening is caused by the timing being slightly off when the barrel is cammed down. While this is not a good thing, it can be corrected by taking a file and removing the burr that is formed. The slide does'nt slam the barrel when it goes all the way back,the slide stops against the camblock. So everyone buy an sr9 and enjoy they are a great piece!!

jag
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Old July 12th, 2010, 07:01 PM   #12
 
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Quote:
Originally Posted by JAG View Post
The peening is caused by the timing being slightly off when the barrel is cammed down. While this is not a good thing, it can be corrected by taking a file and removing the burr that is formed. The slide does'nt slam the barrel when it goes all the way back,the slide stops against the camblock. So everyone buy an sr9 and enjoy they are a great piece!!

jag
Have to agree JAG. I purchased a used OD green SR9 in May 2010 with a 330-53XXX serial number and a 3/5/2009 test fire date. Don't know how many rounds have gone through the gun prior to my purchase, but I put at least 400 a week down range, and have personally put well over 2000 rounds down the barrel. No peening whatsoever, no fail to anything, not a single hiccup of any kind using almost exclusively the cheapest Walmart Federal ammo.

Like many 'internet' issues (not saying that there are no issues, but the internet tends to inflate), the chances of having a problem on a new or used gun are small. If there is a problem, Ruger will take care of it by matching the slide and the barrel. That way the timing issues mentioned will be addressed because the components are matched.
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Old July 14th, 2010, 11:56 AM   #13
 
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Mine had the problem. From my understanding it is a metal hardening issue, not a timing issue that causes it. It could be either or both though.

However, when I discovered it and did a day or so of research I sent it back in. Got it back 6 days later with a new barrel. 800 rounds later still no peening.

They said the only thing they did was replace the barrel and that some had been hardened incorrectly. And the gun seems to still operate in the same timing as before (still slamming into the barrel). But the barrel doesn't disfigure at all, just slight wear marks like it should be.

Overall I have come to love the gun, it was a rough start though with all the tinkering needed to get it in the right spot.
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