Why you shouldn't shoot someone else's reloads/handloads...

[Big Frank]

It looks like the last shot ringed the barrel. They probably stopped shooting when the slide wouldn't go back.

[Fatman]

This looks staged, and i think I have seen this photo before saying it was intentional. It looks like multiple rounds fired with either just the primer or the primer and a touch of powder. I actually had a squib from a factory load while I was firing variable string lengths of two or more as called by a partner. There was a slightly odd sounding 'pop' at one point, followed by a slightly louder than normal gunshot - but with all the other firing going on, sometimes sound plays tricks. The pistol continued to fire just fine, cycled smoothly, etc.

At any rate, I finished out the day and noticed a large bulge in the barrel on disassembly - it looked nothing like the cut barrel in the op. Bulged area was about 1" in length, with the largest diameter near the center of that area. I'm not an engineer, but I'm guessing the bulge was caused by compression of the gasses trapped between the squib bullet and the next good round as it traveled down the barrel. I think the 'pop' was the noise of the lodged round finally being forced out as the pressure behind it increased.

The round in question was UMC, and Remington took care of me quickly and with no questions asked. They took the pistol and checked it for cracks and stress (forget the process name, but it was done with magnetic fields) and replaced the barrel. While they didn't say so, I believe the replacement was match grade. Pistol was more accurate when I got it back.

Kudos to Remington

[Timothy]

The round in question was UMC, and Remington took care of me quickly and with no questions asked. They took the pistol and checked it for cracks and stress (forget the process name, but it was done with magnetic fields) and replaced the barrel. While they didn't say so, I believe the replacement was match grade. Pistol was more accurate when I got it back.

Kudos to Remington

It's called "Magnetic Particle" non destructive analysis....whereas they charge the metal magnetically and apply a medium that will develop and show any inclusions or cracks in the metal.

I think.....I'm not in QA and I don't play one on TV.....

[tombogan03884]

 Thats what it's called all right, T/C does it to every barrel they make before bluing. (I don't know if there is a reason they do it then, but that is where it falls in the manufacturing process. )

[Timothy]

Thats what it's called all right, T/C does it to every barrel they make before bluing. (I don't know if there is a reason they do it then, but that is where it falls in the manufacturing process. )

We do it before machining or when the end user requires it in our manufacturing process.  I would assume it's to ensure that there are no stress fractures or inclusions from the rifling process.  Why waste time blueing the barrel if it's already junk.

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