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Posted: 10/18/2014 2:29:48 PM EDT
[#1]
Quote HistoryQuoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. please tell me this is sarcasm. If not, you're an idiot. OP: it looks like bad ammo to me. probably an OOB or an over charged round. unless you find a bulge in the barrel. then it may of been a squib. but I find it hard to believe a squib cycled in the next round. |
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Posted: 10/18/2014 2:32:13 PM EDT
[#2]
once heard about having the cartridge undercharged as a possibility of blowout. Guy said that if you have less than half the cartridge full of powder then the primer can blow across the top surface of the powder instead of igniting from the back. When this happens, he related that it all goes at once instead of in phase. Anyone?
I didnt buy his ocean front property in AZ though. |
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Posted: 10/18/2014 2:33:17 PM EDT
[#3]
New theory...
Uncle Joe was doing an exorcism on that evil 'ghost gun' and it blew up. Or crappy reload with pistol powder. Love the way the BSG banana'd. Even the gas rings look a little whacked. Hope we get more pictures tomorrow! |
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Posted: 10/18/2014 2:36:42 PM EDT
[#4]
Quote HistoryQuoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. |
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Posted: 10/18/2014 2:53:36 PM EDT
[#5]
Quote HistoryQuoted:
Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Quote HistoryQuoted:
Quoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Headspacing in any gun is important. Generally in ARs it is not an issue because parts are in spec. This is diffrent than saying it's not important. I have never checked Headspacing on a factory gun. Only guns I have put together or changed something on. Headspace is the distance from the bolt face to where the shoulder of the case rests in the chamber. It is the area in which the brass can expand. So it is possible to have an extention that a bolt locks into just fine but there is still excessive headspace. |
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Posted: 10/18/2014 2:56:44 PM EDT
[#6]
Quote HistoryQuoted:
please tell me this is sarcasm. If not, you're an idiot. OP: it looks like bad ammo to me. probably an OOB or an over charged round. unless you find a bulge in the barrel. then it may of been a squib. but I find it hard to believe a squib cycled in the next round. Quote HistoryQuoted:
Quoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. please tell me this is sarcasm. If not, you're an idiot. OP: it looks like bad ammo to me. probably an OOB or an over charged round. unless you find a bulge in the barrel. then it may of been a squib. but I find it hard to believe a squib cycled in the next round. Please explain, in detail, how the AR15 can have a Out Of Battery ignition. |
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Posted: 10/18/2014 2:58:18 PM EDT
[#7]
Quote HistoryQuoted:
Headspacing in any gun is important. Generally in ARs it is not an issue because parts are in spec. This is diffrent than saying it's not important. I have never checked Headspacing on a factory gun. Only guns I have put together or changed something on. Headspace is the distance from the bolt face to where the shoulder of the case rests in the chamber. It is the area in which the brass can expand. So it is possible to have an extention that a bolt locks into just fine but there is still excessive headspace. Quote HistoryQuoted:
Quoted:
Quoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Headspacing in any gun is important. Generally in ARs it is not an issue because parts are in spec. This is diffrent than saying it's not important. I have never checked Headspacing on a factory gun. Only guns I have put together or changed something on. Headspace is the distance from the bolt face to where the shoulder of the case rests in the chamber. It is the area in which the brass can expand. So it is possible to have an extention that a bolt locks into just fine but there is still excessive headspace. This is true. However, excessive headspace causes damage to brass, it does not cause k'booms like we see here. |
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Posted: 10/18/2014 3:00:40 PM EDT
[#8]
Quote HistoryQuoted:
This is true. However, excessive headspace causes damage to brass, it does not cause k'booms like we see here. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Headspacing in any gun is important. Generally in ARs it is not an issue because parts are in spec. This is diffrent than saying it's not important. I have never checked Headspacing on a factory gun. Only guns I have put together or changed something on. Headspace is the distance from the bolt face to where the shoulder of the case rests in the chamber. It is the area in which the brass can expand. So it is possible to have an extention that a bolt locks into just fine but there is still excessive headspace. This is true. However, excessive headspace causes damage to brass, it does not cause k'booms like we see here. Right, I mentioned that in my first post. |
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Posted: 10/18/2014 3:00:47 PM EDT
[#9]
Quote HistoryQuoted:
Please explain, in detail, how the AR15 can have a Out Of Battery ignition. Quote HistoryQuoted:
Quoted:
Quoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. please tell me this is sarcasm. If not, you're an idiot. OP: it looks like bad ammo to me. probably an OOB or an over charged round. unless you find a bulge in the barrel. then it may of been a squib. but I find it hard to believe a squib cycled in the next round. Please explain, in detail, how the AR15 can have a Out Of Battery ignition. A pierced primer craters the bolt face, elongates the firing pin hole and dimples the firing pin tip. the hot gases braize primer and rim fragments to the bolt face. as the next round is chambered these damaged and debris littered parts strike the primer of the round as its picked up by the bolt face, firing the primer even though the trigger wasnt even pulled. if your lucky it fully chamber first and only slamfires. if you are unlucky it does it while its OOB. Example: http://www.ar15.com/forums/t_1_5/1677189_AR15_Kaboom___What_happened_here_.html&page=3#i49924359 |
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Posted: 10/18/2014 3:01:37 PM EDT
[#10]
Quote HistoryQuoted:
I'm going with head space issues, if I recall correctly bad head space sometimes don't cause issues at first or even at all but when it does it's similar to what we are seeing. Nope. |
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Posted: 10/18/2014 3:02:18 PM EDT
[#11]
Tag for outcome
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Posted: 10/18/2014 3:02:28 PM EDT
[#12]
What would happen if the gas key was improperly staked, or not staked and 'let go'?
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Posted: 10/18/2014 3:05:36 PM EDT
[#13]
Quote HistoryQuoted:
What would happen if the gas key was improperly staked, or not staked and 'let go'? Not sure. But I wouldn't expect the bottom of the carrier to be missing. Hopefully the OP can get everything appart so we can see it. |
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Posted: 10/18/2014 3:13:59 PM EDT
[#14]
Quote HistoryQuoted: What would happen if the gas key was improperly staked, or not staked and 'let go'? Bolt wouldn't unlock @ all, or you'd get a partial extraction before the gas key wedged up under the charging handle. |
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Posted: 10/18/2014 3:14:47 PM EDT
[#15]
Possibility I haven't noticed in this thread yet is set back. Poorly crimped reload's could allow the bullet to set back during feeding to a point where pressures get crazy.
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Posted: 10/18/2014 3:18:05 PM EDT
[#16]
I would love for someone to explain how an excessive head space could cause damage, especially of this magnitude.
OOB ignition is a possibility but takes extra ordinary conditions to occur. Even then, the damage evident in the pics is pretty severe for just an OOB ignition. It's hard to say exactly what caused it. I would look at the ammo first as well as a detailed description of the sequence of events immediately prior to the kaboom. |
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Posted: 10/18/2014 3:19:06 PM EDT
[#17]
Quote HistoryQuoted:
Possibility I haven't noticed in this thread yet is set back. Poorly crimped reload's could allow the bullet to set back during feeding to a point where pressures get crazy. Not likely an issue with rifle propellants. My 5.56 loads are compressed. |
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Posted: 10/18/2014 3:30:07 PM EDT
[#18]
Before I did anything else I'd pull the bullets on at least 10 other cartridges and weigh and inspect the powder. You're eventually going to pull them all anyway, or someone will. I'm betting it's wrong powder and an overcharge. Or less likely, wrong powder and a serious undercharge.
I wouldn't completely rule out other causes, but it sure looks like an over pressure situation to me. |
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Posted: 10/18/2014 3:40:37 PM EDT
[#19]
Quote HistoryQuoted:
Thanks for unlocking this thread..  Wut, Wat I miss? 
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Posted: 10/18/2014 3:45:12 PM EDT
[#20]
OP, while seems ammo related, if you want to send me the barrel after you've disassembled the gun I'll do a borescope inspection. I'll check headspace too but being post KB I'm not sure what that will tell you. Maybe we can take some mystery out of it. Just a thought, so pm me Monday if you want to.
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Posted: 10/18/2014 3:45:22 PM EDT
[#21]
Quote HistoryQuoted: The rare in after the the lock. |
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Posted: 10/18/2014 3:49:55 PM EDT
[#22]
Without knowing anything more than the pics:
Fired out of battery (a slam fire), or the case head let go. So, what did a closer look reveal? |
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Posted: 10/18/2014 3:50:43 PM EDT
[#23]
Quote HistoryQuoted:
please tell me this is sarcasm. If not, you're an idiot. OP: it looks like bad ammo to me. probably an OOB or an over charged round. unless you find a bulge in the barrel. then it may of been a squib. but I find it hard to believe a squib cycled in the next round. Quote HistoryQuoted:
Quoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. please tell me this is sarcasm. If not, you're an idiot. OP: it looks like bad ammo to me. probably an OOB or an over charged round. unless you find a bulge in the barrel. then it may of been a squib. but I find it hard to believe a squib cycled in the next round. That was some pretty epic trolling by Stripeknight....lol (he's a huge PSA supporter, if you have never read a PSA hater thread in GD before). |
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Posted: 10/18/2014 3:52:07 PM EDT
[#24]
Quote HistoryQuoted:
Would the barrel be bulged or split if it was a squib? Quote HistoryQuoted:
Quoted:
Squib or overcharged ammo. Would the barrel be bulged or split if it was a squib? squib lodged in barrel followed by a non-squib. |
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Posted: 10/18/2014 4:01:53 PM EDT
[#25]
Quote HistoryQuoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. Post less, seriously... Or log out and never log back in, that'll work too. |
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Posted: 10/18/2014 4:06:43 PM EDT
[#26]
Quote HistoryQuoted: This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. |
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Posted: 10/18/2014 4:07:36 PM EDT
[#27]
Quote HistoryQuoted: AR15's by design do not need to be headspaced. I could see headspacing If the guy took a no name barrel and no name barrel extension and wrenched them together and then put them into a upper. Would he need to GO gauge it? Probably, but the vast majority of uppers are pre-barreled and the vast vast majority of barrels have the barrel extension factory installed. Quote HistoryQuoted: Quoted: Quoted: Did anyone check the headspace when it was built? AR15's by design do not need to be headspaced. I could see headspacing If the guy took a no name barrel and no name barrel extension and wrenched them together and then put them into a upper. Would he need to GO gauge it? Probably, but the vast majority of uppers are pre-barreled and the vast vast majority of barrels have the barrel extension factory installed. |
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Posted: 10/18/2014 4:10:39 PM EDT
[#28]
Quote HistoryQuoted:
I would consider that as a slam fire and not a regular OOB. you would have two rapid fires, the first round which you pulled the trigger, the second which fired up loading. the diagnosis and fix would be different. either way, determining if it was a OOB/slam fire vs a wrong powder charge should be simple, in a OOB the primer and most of the case will be intact, a wrong powder overpressure will have blown out the primer, and probably burned away the bolt face and firing pin, it will all have brass dust over it. Quote HistoryQuoted:
Quoted:
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For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. Bullshit. You guys are seriously overlooking one KB, one that's actually happened to me years ago. Primer gets stuck/fused to the bolt face then as next round get pushed into the chamber the stuck/fused primer sets off the next round oob as the head space is taken up. I would consider that as a slam fire and not a regular OOB. you would have two rapid fires, the first round which you pulled the trigger, the second which fired up loading. the diagnosis and fix would be different. either way, determining if it was a OOB/slam fire vs a wrong powder charge should be simple, in a OOB the primer and most of the case will be intact, a wrong powder overpressure will have blown out the primer, and probably burned away the bolt face and firing pin, it will all have brass dust over it. "Slam fire" would indicate that the bolt was locked but fired without the pull of the trigger. WIth my example, it fired out of battery. |
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Posted: 10/18/2014 4:24:03 PM EDT
[#29]
The simple fact is that no one knows what caused this...and never will
Guess away all you like, they'll always only be guesses, it happens. Put a new upper on it and get on with life |
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Posted: 10/18/2014 4:30:05 PM EDT
[#30]
Quote HistoryQuoted:
The simple fact is that no one knows what caused this...and never will Guess away all you like, they'll always only be guesses, it happens. Put a new upper on it and get on with life Is that how you explain airplane crashes or bridge collapses too? 
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Posted: 10/18/2014 4:35:32 PM EDT
[#31]
Quote HistoryQuoted:
GTFO 13'er  Quote HistoryQuoted:
Quoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. GTFO 13'er |
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Posted: 10/18/2014 5:14:21 PM EDT
[#32]
Quote HistoryQuoted:
Bullshit. You guys are seriously overlooking one KB, one that's actually happened to me years ago. Primer gets stuck/fused to the bolt face then as next round get pushed into the chamber the stuck/fused primer sets off the next round oob as the head space is taken up. http://i9.photobucket.com/albums/a77/millersho/IMG_0018.jpg http://i9.photobucket.com/albums/a77/millersho/upper-damage.jpg Quote HistoryQuoted:
Quoted:
For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. Bullshit. You guys are seriously overlooking one KB, one that's actually happened to me years ago. Primer gets stuck/fused to the bolt face then as next round get pushed into the chamber the stuck/fused primer sets off the next round oob as the head space is taken up. http://i9.photobucket.com/albums/a77/millersho/IMG_0018.jpg http://i9.photobucket.com/albums/a77/millersho/upper-damage.jpg Since you seem to be incapable of reading, I have bolded the relevant parts of my post: Quoted:
For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. In your example, the cartridge was fired via foreign debris, not the firing pin. |
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Posted: 10/18/2014 5:21:20 PM EDT
[#33]
If it was a new barrel and a new bolt I dont think headspace was the problem. My bet is on gunshow bad ammo/reloads.
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Posted: 10/18/2014 5:22:58 PM EDT
[#34]
Quote HistoryQuoted:
Since you seem to be incapable of reading, I have bolded the relevant parts of my post: In your example, the cartridge was fired via foreign debris, not the firing pin. Quote HistoryQuoted:
Quoted:
Quoted:
For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. Bullshit. You guys are seriously overlooking one KB, one that's actually happened to me years ago. Primer gets stuck/fused to the bolt face then as next round get pushed into the chamber the stuck/fused primer sets off the next round oob as the head space is taken up. http://i9.photobucket.com/albums/a77/millersho/IMG_0018.jpg http://i9.photobucket.com/albums/a77/millersho/upper-damage.jpg Since you seem to be incapable of reading, I have bolded the relevant parts of my post: Quoted:
For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. In your example, the cartridge was fired via foreign debris, not the firing pin. You said the gun cannot fire without the bolt being locked, I'm just pointing out that it can. I'm not implying it's the OP's issue. |
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Posted: 10/18/2014 5:35:48 PM EDT
[#35]
Quote HistoryQuoted:
You said the gun cannot fire without the bolt being locked, I'm just pointing out that it can. I'm not implying it's the OP's issue. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. Bullshit. You guys are seriously overlooking one KB, one that's actually happened to me years ago. Primer gets stuck/fused to the bolt face then as next round get pushed into the chamber the stuck/fused primer sets off the next round oob as the head space is taken up. http://i9.photobucket.com/albums/a77/millersho/IMG_0018.jpg http://i9.photobucket.com/albums/a77/millersho/upper-damage.jpg Since you seem to be incapable of reading, I have bolded the relevant parts of my post: Quoted:
For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. In your example, the cartridge was fired via foreign debris, not the firing pin. You said the gun cannot fire without the bolt being locked, I'm just pointing out that it can. I'm not implying it's the OP's issue. Context dependent. Fire meaning by the user pulling the trigger. I wouldn't have specified the firing pin if I was not aware of foreign debris as a possible ignition source. That said I will clarify my wording in that post. |
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Posted: 10/18/2014 7:50:22 PM EDT
[#36]
I would pull the bullets on the sample rounds from your nephew, weigh the charges, and MEASURE THE CASE LENGTHS. I'm betting the cases were not trimmed to a uniform length. All it takes is one over-length case to pinch the bullet and cause pressures to spike.
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Posted: 10/18/2014 7:58:05 PM EDT
[#37]
Quote HistoryQuoted:
Squib or overcharged ammo. This... With a very slight chance of bad headspace |
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Posted: 10/18/2014 8:01:16 PM EDT
[#38]
Quote HistoryQuoted:
Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Quote HistoryQuoted:
Quoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. About one in 50 was my experience when I was building these things for a living...would headspace insufficiently.. And I would have to find one that Headspace's correctly. |
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Posted: 10/18/2014 8:10:28 PM EDT
[#39]
Quote HistoryQuoted:
Would the barrel be bulged or split if it was a squib? Quote HistoryQuoted:
Quoted:
Squib or overcharged ammo. Would the barrel be bulged or split if it was a squib? Yup; |
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Posted: 10/18/2014 8:24:49 PM EDT
[#40]
Quote HistoryQuoted:
This is true. However, excessive headspace causes damage to brass, it does not cause k'booms like we see here. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Headspacing in any gun is important. Generally in ARs it is not an issue because parts are in spec. This is diffrent than saying it's not important. I have never checked Headspacing on a factory gun. Only guns I have put together or changed something on. Headspace is the distance from the bolt face to where the shoulder of the case rests in the chamber. It is the area in which the brass can expand. So it is possible to have an extention that a bolt locks into just fine but there is still excessive headspace. This is true. However, excessive headspace causes damage to brass, it does not cause k'booms like we see here. What about insufficient? |
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Posted: 10/18/2014 8:31:52 PM EDT
[#41]
Quote HistoryQuoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. lol |
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Posted: 10/18/2014 8:33:01 PM EDT
[#42]
Quote HistoryQuoted:
What about insufficient? Quote HistoryQuoted:
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Quoted:
Quoted:
Did anyone check the headspace when it was built? Since the barrel extensions are put on at the factory is there really any reason to check a head-space with a AR15? I mean as long as the bolt will insert and lock up isnt checking it any further kind of moot? ETA: Last time i asked that question here i got mocked saying there was no reason. So its a serious question I am asking. Headspacing in any gun is important. Generally in ARs it is not an issue because parts are in spec. This is diffrent than saying it's not important. I have never checked Headspacing on a factory gun. Only guns I have put together or changed something on. Headspace is the distance from the bolt face to where the shoulder of the case rests in the chamber. It is the area in which the brass can expand. So it is possible to have an extention that a bolt locks into just fine but there is still excessive headspace. This is true. However, excessive headspace causes damage to brass, it does not cause k'booms like we see here. What about insufficient? Insufficient headspace? The bolt wouldn't lock into battery. |
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Posted: 10/18/2014 8:45:13 PM EDT
[#43]
Quote HistoryQuoted:
Not likely an issue with rifle propellants. My 5.56 loads are compressed. Quote HistoryQuoted:
Quoted:
Possibility I haven't noticed in this thread yet is set back. Poorly crimped reload's could allow the bullet to set back during feeding to a point where pressures get crazy. Not likely an issue with rifle propellants. My 5.56 loads are compressed. Quick question, I was under the impression that setback wasn't an iisue in an AR as it is in pistol rounds. I think I got this information in the reloading section here. |
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Posted: 10/18/2014 8:50:34 PM EDT
[#44]
First off My bet is on bad ammo, probably stuffed with pistol powder.
But it could be an out of battery detonation caused by a defective bolt/carrier/cam pin, a couple of decades back there were many SOFT, (not properly hardend or incorrect material used) Bolts/carrier/cam pins around that caused problems for an unlucky few, I hope these defective parts are not showing up again! I would look closely at the ammo first though. |
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Posted: 10/18/2014 8:52:20 PM EDT
[#45]
Quote HistoryQuoted:
This is what happens when you purchase from PSA. Their manufacturing is obviously by a bunch of incompetents, it also explains the very cheap pricing... ETA: You get what you pay for. and you have no fucking clue what you ate talking about. Iirc that lower was made by Aero Precision for PSA. |
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Posted: 10/18/2014 8:54:27 PM EDT
[#46]
Did not read all the posts if the barrel is not bulged I'm going with some pistol powder found its way in the ammo,compressed or set back is not to big a deal in rifle ammo. A lot of loads are compressed but iv've been drinking so
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Posted: 10/18/2014 9:19:13 PM EDT
[#47]
Not enough information Premature Poll |
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Posted: 10/18/2014 9:19:41 PM EDT
[#48]
Not enough information Premature Poll/Post |
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Posted: 10/18/2014 9:22:00 PM EDT
[#49]
Op, I have not seen it mentioned yet, but I'd leave the curiosity to the cat and have your friend pack everything up as is and send it back to PSA. Have them make it right, and have them determine what happened. I can't image that they would not take care of him.
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Posted: 10/18/2014 9:22:28 PM EDT
[#50]
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"Slam fire" would indicate that the bolt was locked but fired without the pull of the trigger. WIth my example, it fired out of battery. Quote HistoryQuoted:
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For those claiming OOB: An AR15 cannot fire unless the bolt is locked. If it fired via the firing pin, and if the rifle has a cam pin, then it fired with a safely locked bolt. If it has its cam pin and fired via the firing pin, and the bolt is unlocked after the kaboom, then the kaboom forced it to unlock after the primer was struck. Bullshit. You guys are seriously overlooking one KB, one that's actually happened to me years ago. Primer gets stuck/fused to the bolt face then as next round get pushed into the chamber the stuck/fused primer sets off the next round oob as the head space is taken up. I would consider that as a slam fire and not a regular OOB. you would have two rapid fires, the first round which you pulled the trigger, the second which fired up loading. the diagnosis and fix would be different. either way, determining if it was a OOB/slam fire vs a wrong powder charge should be simple, in a OOB the primer and most of the case will be intact, a wrong powder overpressure will have blown out the primer, and probably burned away the bolt face and firing pin, it will all have brass dust over it. "Slam fire" would indicate that the bolt was locked but fired without the pull of the trigger. WIth my example, it fired out of battery. Slamfires have nothing to do with the bolt being locked, they occure when the bolt is loading the round into the chamber and something contacts the primer. Most often due to a sticking firing pin, but in your case it was caused by debris. Its not uncommon with sks's. |
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