Blew up my AR today. KABOOM!
- Thread starter Rust
- Start date
mildcustom2
CGN Ultra frequent flyer
- Location
- Surrey, B.C.
American built AR's definitely have blown up. A quick google search finds lots of examples. The problem for Norinco in Canada is that there are far more Norinco AR's in Canadian hands than American made AR's because they are so cheap. This stacks the odds against Norinco when a Kaboom happens.
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I'm willing to bet this is an ammo problem.
Option 1: a squib load on round #3 left a bullet in the barrel, then when round 4 goes off, there's the kaboom.
Option 2: a severely overcharged (with powder) round on #4, or pistol powder got into that case
Option 3: a set back into casing bullet created insanely high pressure that the bolt lugs couldn't handle
Can't say for sure what may have happened until we see pics of the case(s) in question.
Option 1: a squib load on round #3 left a bullet in the barrel, then when round 4 goes off, there's the kaboom.
Option 2: a severely overcharged (with powder) round on #4, or pistol powder got into that case
Option 3: a set back into casing bullet created insanely high pressure that the bolt lugs couldn't handle
Can't say for sure what may have happened until we see pics of the case(s) in question.
- Location
- Saskatchewan
I'll guess it was a bullet that was set back in the case during feeding.
canucklehead
CGN Ultra frequent flyer
- Location
- Calgary, AB
Stuck firing pin is my guess. If he was shooting the crimped tip Winchester white box (45gr 'varmint' stuff), I'd say pushed in bullet for sure.
Out of Battery.. if he recovered the brass it should be a lot easier to tell.
Out of Battery.. if he recovered the brass it should be a lot easier to tell.
For option 1 to occur, if OP fired round 3 which turned out to be a squib load and OP manually cycled the bolt because I don't think there will be enough gas pressure to cycle the bolt provided the bullet made it past the gas port. OP will need to clarify whether or not he manually charged the 4th round.
Option 3 was my guess but I'll let those more familiar with overpressure causes answer that.
Yup. waiting for pics.
This type of thing is more often ammo than rifle. It's more likely that the case was too soft and failed. This happens, for example, when brass is annealed upside down.
The case head blows out. The weakest portion of the bolt face is the extractor which fails first is often bent into the locking recess along with brass from the case head.
The debris usually blows out the port and then the mag.
Pistol powder usually breaks the bottom of the carrier and often rips off the side of the upper.
Breech obstructions only do this if the obstruction is very close to the projectile. They also leave bulged barrels.
The simple way to tell is to place a rod in the barrel and tap the bolt rearward.
If there is no projectile in the barrel, the extractor will bend back and the bolt will move to the rear. The base of the case will be bulged out up to the last point of support and likely blown out at the extractor cut right back to the primer pocket.
This can't happen -unless the FP was broken and the front half was fixed solid to the bolt while protruding -which is very unlikely.
Take your BCG and push the FP forward while you unlock the bolt. The FP disappears. This prevents firing out of battery.
- Location
- Burnaby, BC
Before we really trash Norcs again, we need pics of what actually happened. The mob wants blood! Post up some pics! LoL
"Bolt is stuck shot".
Is the bolt locked - i.e. - is the bolt rotated so that the locking lugs are engaged?
If so, there was a catastrophic case head failure, allowing high pressure gas to be released back into the receiver.
Now why did the case fail?
Is the bolt locked - i.e. - is the bolt rotated so that the locking lugs are engaged?
If so, there was a catastrophic case head failure, allowing high pressure gas to be released back into the receiver.
Now why did the case fail?
- Location
- Richmond, BC
Pretty scary, gald your ok.
A bullet pushed into the case cannot cause a detonation. A bullet that got out of the case when chambered and started engaging the rifling, however, can cause a huge spike of pressure when ignited.
An AR can not fire out of battery, and his bolt is stuck shut, we call that a clue.
Pistol powder can not magically find it's way in one casing in a production lot.
So it's probably a case head failure due to..... My guess would be too much powder above anything else. Can happens to any ammo mfg.
All things considered, Norinco ammo isn't any more dangerous than american ammo. LOTS of reported kabooms in the U.S.
WE NEED PICS! How many holes in the target?
An AR can not fire out of battery, and his bolt is stuck shut, we call that a clue.
Pistol powder can not magically find it's way in one casing in a production lot.
So it's probably a case head failure due to..... My guess would be too much powder above anything else. Can happens to any ammo mfg.
All things considered, Norinco ammo isn't any more dangerous than american ammo. LOTS of reported kabooms in the U.S.
WE NEED PICS! How many holes in the target?
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Given the history - (undersized projectiles in the ammo, indicating QC issues) and the rifle's basic design (designed to resist OOB's and other issues, and responded per design ie blast out and down) at this point I'm thinking ammo, not gun.
canucklehead
CGN Ultra frequent flyer
- Location
- Calgary, AB
First off, please get some pics up..... Use imgur, it doesnt take long.
Second, on a few ocasions ive had the bullet push into the casing with norinco white box..... Maybe this could have happened....
Third, Im glad to hear your OK.
Second, on a few ocasions ive had the bullet push into the casing with norinco white box..... Maybe this could have happened....
Third, Im glad to hear your OK.
