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Old 03-01-2013, 17:58   #1
theAlgorithmist
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G31 went kaboom tonight

I was having a nice night at the range, shooting controlled triples at a Zombie target. New box of the Underwood 357 Sig FMJ's. Checked the barrel after every set of three.

First 45 went okay. Then a kaboom. My favorite gun is history.

I suppose this means it's time to move into 10mm for my hiking gun (I really enjoyed shooting .357 Sig). So, in addition to NEVER shooting Underwood again, I have some carry ammo I'm interested in getting rid of for cheap. Feel free to PM me.

I'll post a pic or two on my blog probably this weekend.
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Old 03-01-2013, 18:00   #2
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How's the hand feel?

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Old 03-01-2013, 18:03   #3
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The hand is okay, I'm glad to report. A tiny cut on the trigger finger, but that's all.

regards,

- jim
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Old 03-01-2013, 18:06   #4
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Whoa!! Scary! I have never had an issue with their 357sig but I had a 38 spcl round once that seemed to be loaded very hot!! as reported here:
http://glocktalk.com/forums/showthread.php?t=1397540
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Old 03-01-2013, 18:58   #5
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Have you contacted Underwood? I would be interested in Kevin's response.

PM sent on the ammo.
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Old 03-01-2013, 19:06   #6
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Sorry to hear. Any recourse through Underwood?? I would contact them.

What exactly happened??
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Old 03-01-2013, 19:18   #7
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I posted a review on their site, which has to go through them for 'approval.' I suppose we'll never see that one live on their site. It has my email address if they ever feel like contacting me. I doubt anything will happen, though.

In addition to checking the barrel after each set of three, I collect all my brass and noticed nothing unusual about them.
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Old 03-01-2013, 19:48   #8
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This is the best pic. I have - hard to see but the casing looks like shredded wheat. KKM barrel, not an unsupported Glock factory. Bullet left the barrel and I think it hit the target
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Old 03-01-2013, 19:58   #9
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Glad you're ok. From the looks of the barrel it could have been worse. The barrel had to be a little warm after that many triples.
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Old 03-01-2013, 20:01   #10
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Not really - I loaded and then shot three rounds at a time. I paused every six to pick up brass.

regards,

- jim
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Old 03-01-2013, 20:01   #11
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That'll buff out :-P glad your OK.

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Old 03-01-2013, 20:35   #12
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Checked the barrel after every set of three.
This may sound like a stupid question, but why? With factory ammo why would you feel the need to check the barrel after every 3 rounds?
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Old 03-01-2013, 20:46   #13
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Which FMJ version were you using? Max loads sure does not minimize the chance of this happening. That is why I stayed away from the Underwood FMJ and did not see the need to try any of their GD stuff wither. HST and GSB treat me well.

Hopefully Underwood stands behind the issue and gets your gun fixed. All my Glock .357sig barrels have superb support but they range from 04'-10' production.

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Old 03-01-2013, 20:59   #14
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Yeah, as long as you don't have a squib, why ever check barrel ?
Killer recoil or what ?


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Old 03-01-2013, 21:08   #15
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If you're running an aftermarket barrel, why do you blame the ammo? Ever think the barrell could have been inferior? I also think it's a little weird to be checking the barrell out after every three shots. I mean, who does that unless they EXPECT a problem?
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Old 03-01-2013, 21:09   #16
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Old 03-01-2013, 21:23   #17
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I check my slide to make sure its fully returned to battery most of the time when shooting my nuclear handloads. If its out of battery for some reason and the striker can still ignite the primer bad things happen. I'm going to rethink shooting super hot ammo in my glock now. Too many things can happen including bullet setback.
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Old 03-01-2013, 21:29   #18
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If you're running an aftermarket barrel, why do you blame the ammo? Ever think the barrell could have been inferior? I also think it's a little weird to be checking the barrell out after every three shots. I mean, who does that unless they EXPECT a problem?
Exactly what I was going to say. This is not a Glock issue or an Underwood issue. OP's issue, if he thinks he has one, is with the barrel manufacturer.
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Old 03-01-2013, 21:29   #19
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Tagged. Glad to hear you're okay.
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Old 03-01-2013, 21:41   #20
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Exactly what I was going to say. This is not a Glock issue or an Underwood issue. OP's issue, if he thinks he has one, is with the barrel manufacturer.
I automatically check the chamber as part of checking that the gun is cleared before I lay it down - also to ensure there are no obstructions, not because I expect a problem with the barrel. It's just a habit. I shot three at a time because it makes the practice session go by at a nice, relaxed pace.

I've also contacted KKM, but every range employee that examined at the gun tonight (included several reloaders), pointed to the ammo as the most likely suspect. Will see what KKM says.
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Old 03-01-2013, 22:14   #21
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Update: Have been contacted by Underwood - sent description and pics. Still waiting for response from KKM. Most all of the ammo is gone.

thx,

- jim
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Old 03-02-2013, 08:05   #22
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Glad you are ok and I'm sorry to hear about your pistol. I shoot 357 Sig also - and I most likely will not shoot the Underwood ammo I have - just to play it safe. Take care!
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Old 03-02-2013, 08:19   #23
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Originally Posted by Snapper2 View Post
I check my slide to make sure its fully returned to battery most of the time when shooting my nuclear handloads. If its out of battery for some reason and the striker can still ignite the primer bad things happen. I'm going to rethink shooting super hot ammo in my glock now. Too many things can happen including bullet setback.

Not trying to be an ass but is it possible some of your nuclear handloads did some damage to the barrel eariler in its life?

Fatigue failures occur due to very small cracks growing slowly over time. Many are too small to see with the eye. When the crack grows too far and hit the edge, rapid failure is likely.
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Old 03-02-2013, 08:33   #24
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The damage does not look to me like the round fired out of battery. That kind of barrel damage is more likely to be overcharge or setback which can spike the pressure levels way over acceptable limits. I also believe it is too pronounced a split to be simple a metal defect in the barrel.
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Old 03-02-2013, 10:00   #25
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Not trying to be an ass but is it possible some of your nuclear handloads did some damage to the barrel eariler in its life?

Fatigue failures occur due to very small cracks growing slowly over time. Many are too small to see with the eye. When the crack grows too far and hit the edge, rapid failure is likely.
Snapper was not the fella that had the kaboom
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