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technique
07-15-2008, 1:54 PM
A customer just brought this in.


Here is what I gathered,
He was shooting hand loaded ammo, loaded with 25gr of powder. boom boom boom...click, he waits.....nothing. As he pulls back on the charging handle to clear the FTE....BOOM!!!!


Crazy huh?????

http://i285.photobucket.com/albums/ll42/technique408/kaboom001.jpg

http://i285.photobucket.com/albums/ll42/technique408/kaboom002.jpg

http://i285.photobucket.com/albums/ll42/technique408/kaboom003.jpg


Never seen anything like it!!!!!

One Shot, One Dropped
07-15-2008, 2:09 PM
That must have been exciting!

When I was working on Sunday, a guy's daughter was shooting his AR (with handloads, of course). She fired one round, and (without either of them noticing) the spent cartridge tore in half leaving the front half in the rifle. The next round sleeved itself into the last one, but didn't completely load. I felt that I had to go over there to lend a helping hand when I saw them trying to use the button to push it forward. It was somewhat strange, but the man seemed to understand what happened. We found the back half of the cartridge so he could post a picture on here, but I haven't found it yet.

By the way, is there any other internal damage? Or, is that thing going to be salvaged?

ironcross
07-15-2008, 2:12 PM
Wicked, Glad no one got hurt...

That must have been one hell of a day :D

What all did it Fed up??

Saigon1965
07-15-2008, 2:16 PM
Hope he had on eye protection.

BigMac
07-15-2008, 2:17 PM
That upper looks salvagable.

technique
07-15-2008, 3:21 PM
http://i285.photobucket.com/albums/ll42/technique408/kb003.jpg

http://i285.photobucket.com/albums/ll42/technique408/kb002.jpg

http://i285.photobucket.com/albums/ll42/technique408/kb001.jpg

http://i285.photobucket.com/albums/ll42/technique408/kb009.jpg

http://i285.photobucket.com/albums/ll42/technique408/kb008.jpg


a few more pics

tankerman
07-15-2008, 3:45 PM
A customer just brought this in.


Here is what I gathered,
He was shooting hand loaded ammo, loaded with 25gr of powder. boom boom boom...click, he waits.....nothing. As he pulls back on the charging handle to clear
Still does not explain how the ejection port assembly got damaged. The receiver does not show any external damage, how would the ejection port cover get damaged? The cover is in an open position when shooting and below the ejection port.

One Shot, One Dropped
07-15-2008, 3:47 PM
Still does not explain how the ejection port assembly got damaged. The receiver does not show any external damage, how would the ejection port cover get damaged? The cover is in an open position when shooting and below the ejection port.

Yeah, did he close the bolt and then close the bolt cover before shooting?

technique
07-15-2008, 4:02 PM
Still does not explain how the ejection port assembly got damaged. The receiver does not show any external damage, how would the ejection port cover get damaged? The cover is in an open position when shooting and below the ejection port.

I know.... Im literally trying to piece it all together:D

WOW..is still all I can say....

Steyr_223
07-15-2008, 4:04 PM
Yeah, did he close the bolt and then close the bolt cover before shooting?

I was thinking the same thing..

technique
07-15-2008, 4:06 PM
I would like to see what the mag looks like, all he brought in was the upper.

Fjold
07-15-2008, 4:10 PM
Probably a hangfire.

He might have contaminated the powder in the case with lube and it smoldered for 5-10 seconds and then lit off.

rtlltj
07-15-2008, 4:15 PM
They always say wait 10 seconds if you get a FTF I say you should wait 60.

jeffyboy
07-15-2008, 4:20 PM
holy $@%!....time for some new underwear!!

One Shot, One Dropped
07-15-2008, 4:31 PM
They always say wait 10 seconds if you get a FTF I say you should wait 60.

Some ranges say in their rules that you should wait 30 seconds to a minute just to be sure that it's a misfire and not a hang fire which is going to blow up after you open it.

Spaceghost
07-15-2008, 4:59 PM
That was my good friend that did a rifle class with me. He doesn't reload.

That round was from a well known company that sells reloaded ammo. I am not going to say the name, it's really my buddies decision if he is going to announce the name of the company, post pics, etc.


That must have been exciting!

When I was working on Sunday, a guy's daughter was shooting his AR (with handloads, of course). She fired one round, and (without either of them noticing) the spent cartridge tore in half leaving the front half in the rifle. The next round sleeved itself into the last one, but didn't completely load. I felt that I had to go over there to lend a helping hand when I saw them trying to use the button to push it forward. It was somewhat strange, but the man seemed to understand what happened. We found the back half of the cartridge so he could post a picture on here, but I haven't found it yet.

By the way, is there any other internal damage? Or, is that thing going to be salvaged?

technique
07-15-2008, 5:02 PM
Your buddy said HE had loaded it. He also gave me permission to post pics and the story as he told it.

One Shot, One Dropped
07-15-2008, 5:16 PM
That was my good friend that did a rifle class with me. He doesn't reload.

That round was from a well known company that sells reloaded ammo. I am not going to say the name, it's really my buddies decision if he is going to announce the name of the company, post pics, etc.

I hope he does decide to load up some pics. It would be interesting for net trolls to see another malfunction that could occur while operating an AR so that they can know how to save their rifles. Really, it is up to him whether or not he wants to post them up, I guess.

One Shot, One Dropped
07-15-2008, 5:19 PM
Your buddy said HE had loaded it. He also gave me permission to post pics and the story as he told it.

I think you are talking about two separate events. He was talking about the story I mentioned from the range, and you are talking about this rifle. The guy he is talking about didn't damage his rifle (not noticeably).

Spaceghost
07-15-2008, 5:24 PM
I was referring to One shot's story, which why I quoted his post.


Your buddy said HE had loaded it. He also gave me permission to post pics and the story as he told it.

BB63Squid
07-15-2008, 7:03 PM
That must have been exciting!

When I was working on Sunday, a guy's daughter was shooting his AR (with handloads, of course). She fired one round, and (without either of them noticing) the spent cartridge tore in half leaving the front half in the rifle. The next round sleeved itself into the last one, but didn't completely load. I felt that I had to go over there to lend a helping hand when I saw them trying to use the button to push it forward. It was somewhat strange, but the man seemed to understand what happened. We found the back half of the cartridge so he could post a picture on here, but I haven't found it yet.

By the way, is there any other internal damage? Or, is that thing going to be salvaged?

One Shot (J),
I was the guy with the FTF + FTE

These rounds were purchased last year at the Cow Palace from Miwalls

I have yet to break down the upper and see if there is any damage.

As I said at the LARGC Sunday, thank you for finding the other half of the spent case.

One Shot, One Dropped
07-15-2008, 10:15 PM
I feel like an idiot! Those were not hand loads; they were store bought reloads.

This guy was awesome, though! They seemed like they were having an awesome time, and it was nice to see a guy getting his whole family involved and having a great time.

I was not calling you out. I'm sorry that I have to watch a bunch of people at once. By "without either of them noticing", I meant that neither of you noticed that it sounded odd. I'm sure you would have if you had been shooting it. I'm just saying that it was tough for her, not being as familiar with the (correct) sound of an AR, to notice that something was off. Being that I watch a bunch of people, I must have assumed one of you pushed it (as most people do).

Also, I only mentioned hand loads because I, subconsciously, equate reloads with hand loads. Since they were reloads and not hand loads, I would seriously recommend pursuing Miwall and requesting that they compensate you in some way for the unsafe nature of their ammunition.

One Shot, One Dropped
07-15-2008, 10:42 PM
By the way, are you going to post up some pictures? That was weird, and I really think people should see what they should be looking out for.

Army
07-16-2008, 12:09 AM
That looks like the base of a bullet inside that case. If so, it was improperly crimped or sized, resulting in the bullet being driven back into the case upon loading. The powder slow burned until he pulled back the charging handle, causing the bullet to slide forward and seal the escaping gas.

Case, being partially withdrawn, explodes from lack of chamber support. Escaping high pressure gas and flame travel through the gas vents in the bolt and carrier, venting against the dust cover, spring, and rod, tearing them away from the receiver.

technique
07-16-2008, 12:42 AM
I think its a piece of cleaning rod used to knock it from the barrel.

One Shot, One Dropped
07-16-2008, 10:02 AM
So, how much of it is going to be salvaged?

technique
07-16-2008, 10:36 AM
M24Armorer is gonna look at it. Personally, I would just get a new upper, But thats if this had happen to me.

BB63Squid
07-16-2008, 2:32 PM
I will, time permitting (kids and all) break down the AR tonight and see if there is damage and post pics of the round(s) at a minimum.

psriley
07-16-2008, 6:02 PM
Looks fine to me. Inspect and clean the chamber, change out the extractor and possibly the ejector, replace the dustcover assembly if desired, function check and go shoot that sucker.

BB63Squid
07-16-2008, 10:27 PM
As promised..

Rounds
http://i37.tinypic.com/24zkaqb.jpg

Upper round
http://i33.tinypic.com/211kmxy.jpg

Lower Round
http://i33.tinypic.com/9u2kh3.jpg

Primer Round
http://i38.tinypic.com/2h3n8ex.jpg

FTL Round
http://i36.tinypic.com/21jw0fb.jpg

Rounds mated
http://i33.tinypic.com/35m37a0.jpg

BB63Squid
07-16-2008, 10:28 PM
Bolt face
http://i36.tinypic.com/2s79ziq.jpg

Chamber 1
http://i35.tinypic.com/zsr9lk.jpg[/IMG

Chamber 2
[IMG]http://i38.tinypic.com/2qa6czo.jpg

From what I can see the Bolt and Carrier assy are fine and have no damage.
My big concern is with the chamber wall. The wall of the casing failed approx half way up.
Did the chamber wall get subjected to any strain, stress or overpressure.

My lighting isn"t good enough to tell right now plus I need to clean the chamber.

slick_711
07-16-2008, 10:40 PM
Crazy huh?????

Never seen anything like it!!!!!

Surprising when it happened I'm sure, but if he wasn't hurt it's certainly not a rifle killer. Tear off what's left of the dust cover, inspect the BCG (primarily the extractor/ext.spring/ejector), and then oil it and go shoot it; that thing looks way too dry.

KDOFisch
07-16-2008, 11:46 PM
I was thinking the same thing..

He must've closed the cover before discharge, otherwise that damage is unexplained. The brass tinting on the ejection port is indicative of such...along of course with the fact that it looks like a bomb hit it.

The bolt's jacked. The ejector might look twisted, but so are all the teeth, and the lugs on the chamber crown are chipped, too. It may still function, but you'll never guarantee a complete and safe feed on that upper again. The actual upper receiver, I don't know, but at this point, given the damage to the actual cartridge (WOW!), I'd say trash the whole 5.56 upper, bolt, carrier, and maybe check that barrel too.

Your customer might want to just buy a new upper half.

Not to be a doom-sayer.