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Posted: 4/29/2021 5:13:45 PM EDT
[#1]
Wonder what the headstamp was.
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Posted: 4/29/2021 5:15:48 PM EDT
[#2]
Quote HistoryQuoted: Sounds like someone was using spotter rounds in a semi. |
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Posted: 4/29/2021 5:17:15 PM EDT
[#3]
Quote HistoryQuoted: There was a bit of slag on the inside back seam of the magazine that fired the round under recoil. Quote HistoryQuoted: Quoted: Sounds like someone was using spotter rounds in a semi. No kidding? That's wild! Chance in a million. Wow. |
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Posted: 4/29/2021 5:17:35 PM EDT
[#4]
God damn lucky to be alive
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Posted: 4/29/2021 5:18:23 PM EDT
[#5]
Yikes.
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Posted: 4/29/2021 5:19:28 PM EDT
[#6]
Quote HistoryQuoted: 50cal's scare the shit out of me honestly. I’ve always passed on shooting them, and stand a good distance away when someone else is shooting one. Watching an arfcommer bump fire a semi barret was entertaining |
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Posted: 4/29/2021 5:22:14 PM EDT
[#7]
First off, it wasn't the ammo!
Look at the rifle A) he has the muzzle brake on and should be removed! He didn't question the reason why the accuracy was off, maybe the sabot was hitting the brake?! B) you need a special chamber to shoot SLAP rounds out of your rifle! Yes, he is lucky! It wasn't the rifle either, the shooter made some bad decisions that day! |
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Posted: 4/29/2021 5:22:57 PM EDT
[#8]
That was an extreme injury and freak occurrence.
He sure did have God and a Gaurdian Angel looking out for him that day. |
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Posted: 4/29/2021 5:23:50 PM EDT
[#9]
Quote HistoryQuoted: 50cal's scare the shit out of me honestly. I only liked firing them with my little red button inside the turret...... |
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Posted: 4/29/2021 5:25:46 PM EDT
[#10]
Quote HistoryQuoted: Damn glad he made it. I will stick with my Barrett Same. Still, I wonder how much different the outcome would be if it really was a super overloaded round but was using an M82A1. |
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Posted: 4/29/2021 5:41:09 PM EDT
[#11]
Quote HistoryQuoted: First off, it wasn't the ammo! Look at the rifle A) he has the muzzle brake on and should be removed! He didn't question the reason why the accuracy was off, maybe the sabot was hitting the brake?! B) you need a special chamber to shoot SLAP rounds out of your rifle! Yes, he is lucky! It wasn't the rifle either, the shooter made some bad decisions that day! From what I understand he had Serbu build the rifle with the special chamber. |
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Posted: 4/29/2021 5:43:35 PM EDT
[#12]
Quote HistoryQuoted: The problem here isn't the factor of safety. This was so catastrophic that it looks the same would have happened even if it was built to handle 110ksi. The problem is that the cheap design has no additional safeguards in the event of catastrophic failure. Because there is no large bolt, all that energy is directed to accelerating a small cap, which essentially becomes a very good projectile. There is no receiver to contain the debris/projectile so it has a clear path to the shooter other than 2 small ears which also became projectiles. None of this is true with a proper 50 BMG design from M99 to M107 Ding Ding! We have a winner. |
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Posted: 4/29/2021 5:44:01 PM EDT
[#13]
Scott is one of the very few gun youtubers i watch religiously. He has great content.
I wish him a fast recovery and i cant wait for some new full auto friday videos |
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Posted: 4/29/2021 5:52:05 PM EDT
[#14]
Quote HistoryQuoted: Love the t-shirt at the end. Lol i kinda want a shirt now that says, just put a thumb in it |
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Posted: 4/29/2021 5:54:38 PM EDT
[#15]
Quote HistoryQuoted: Video says it was likely 85ksi. The design clearly needs to be enhanced but if it was built to handle 110ksi (2x safety factor) it would have been able to handle that load without grenading and sending lethal fragments into the operator as happened here. Some damage yes, but not a catastrophic failure as demonstrated here. 50 caliber is an entirely different energy category from pistol and rifle calibers and should be treated as such. In video he says that Mark Serbu told him that it would take at least 85k PSI. It could have been FAR HIGHER, but a minimum of 8fk to pull the threads. |
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Posted: 4/29/2021 5:55:16 PM EDT
[#16]
Watched the whole video. That is nuts. Guy is doing great for only 3 weeks after that kind of accident. I will pass on .50 SLAP rounds.
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Posted: 4/29/2021 5:55:44 PM EDT
[#17]
Quote HistoryQuoted: I’ve always passed on shooting them, and stand a good distance away when someone else is shooting one. Watching an arfcommer bump fire a semi barret was entertaining Quote HistoryQuoted: Quoted: 50cal's scare the shit out of me honestly. I’ve always passed on shooting them, and stand a good distance away when someone else is shooting one. Watching an arfcommer bump fire a semi barret was entertaining I've shot one of the AR-15 based lower one for a couple of rounds. I'm good and have no desire to ever own one. There's just something about 3x (or more) the powder than used in something like a 300WM that makes me apprehensive about them. I'm sure a Barrett, AI, or Armalite would be fine but I just don't have enough interest in one to spend the money on any of those and I refuse to buy a cheap 50BMG. |
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Posted: 4/29/2021 5:56:06 PM EDT
[#18]
I’m so getting that shirt.
That Serbu design is pretty suspect. As a poster ahead of me noted, stronger ears to contain or at least deflect the cap upwards should have been in the design. |
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Posted: 4/29/2021 5:57:28 PM EDT
[#19]
Quote HistoryQuoted: First off, it wasn't the ammo! Look at the rifle A) he has the muzzle brake on and should be removed! He didn't question the reason why the accuracy was off, maybe the sabot was hitting the brake?! B) you need a special chamber to shoot SLAP rounds out of your rifle! Yes, he is lucky! It wasn't the rifle either, the shooter made some bad decisions that day! By the time the sabot would have hit the brake, the end cap had already crushed his face. What is this "Special Chamber"? |
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Posted: 4/29/2021 6:01:02 PM EDT
[#20]
My first 50 was a Vulcan. Bought it young and dumb before I knew anything about 50's. Once I learned more, the fear of having this happen to me got me to sell it. Got me an AR50 now but still mindful of the risk.
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Posted: 4/29/2021 6:02:52 PM EDT
[#21]
Quote HistoryQuoted: Lol i kinda want a shirt now that says, just put a thumb in it Quote HistoryQuoted: Quoted: Love the t-shirt at the end. Lol i kinda want a shirt now that says, just put a thumb in it Order one. I did. |
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Posted: 4/29/2021 6:02:57 PM EDT
[#22]
Those ears are 1/4" thick and are machined in place out of the lower. The cap is hardened and you can't fire the rifle unless it's screwed all the way in. There's at least half inch of thread contact all the way around the cap, so how would an interrupted thread be stronger?
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Posted: 4/29/2021 6:05:51 PM EDT
[#23]
Quote HistoryQuoted: Sure they do - the problem is when cheap and unsafe go together. I wouldn't want a .338WM of the exact same design as the safety issue would remain. It wasn't a materials problem. ETA: I take it back. This isn't the design I thought it was. He was firing SLAP of unknown vintage/storage. Good lord. I thought it was well known not to do that! You have to pull the projectile and load it over known powder of a known weight if you absolutely must fire it. ^ These days,, like third rail said, pull it, weigh it, reload it... your life might depend on it. |
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Posted: 4/29/2021 6:06:01 PM EDT
[#24]
Quote HistoryQuoted: I’ve always passed on shooting them, and stand a good distance away when someone else is shooting one. Watching an arfcommer bump fire a semi barret was entertaining Quote HistoryQuoted: Quoted: 50cal's scare the shit out of me honestly. I’ve always passed on shooting them, and stand a good distance away when someone else is shooting one. Watching an arfcommer bump fire a semi barret was entertaining Yeah I have zero interest in shooting those crazy big bore rifles, for obvious reasons. There isn't anywhere I could actually shoot the fucking thing anyway |
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Posted: 4/29/2021 6:07:30 PM EDT
[#25]
Quote HistoryQuoted: That was an extreme injury and freak occurrence. He sure did have God and a Gaurdian Angel looking out for him that day. It's actually happened quite a bit with those weirdly put together cheapass .50s. Show me where that has ever happened with a Barrett |
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Posted: 4/29/2021 6:07:32 PM EDT
[#26]
The special chamber has a longer leade to accommodate the sabot of the SLAP round. His were SLAP-T and would be even longer for the tracer, I was surprised it even fit.
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Posted: 4/29/2021 6:08:10 PM EDT
[#27]
Quote HistoryQuoted: Actually, I just watched it again, he said over 85000 psi...  
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Posted: 4/29/2021 6:08:46 PM EDT
[#28]
That Serbu design is suspect. There's nowhere for anything to go except for straight back into your face. On modern bolt actions even if the lugs all failed there's still a mechanism to vent the pressure and catch the bolt. Usually the case fails first venting pressure. That cap system fully encloses everything.
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Posted: 4/29/2021 6:09:04 PM EDT
[#29]
Quote HistoryQuoted: First off, it wasn't the ammo! Look at the rifle A) he has the muzzle brake on and should be removed! He didn't question the reason why the accuracy was off, maybe the sabot was hitting the brake?! B) you need a special chamber to shoot SLAP rounds out of your rifle! Yes, he is lucky! It wasn't the rifle either, the shooter made some bad decisions that day! ^ Great eye, true, I've read that you are NOT to use a muzzle break while using SLAP rounds. |
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Posted: 4/29/2021 6:12:18 PM EDT
[#30]
Quote HistoryQuoted: It's actually happened quite a bit with those weirdly put together cheapass .50s. Show me where that has ever happened with a Barrett Yep, here is the Vulcan that nearly killed the shooter, anybody notice anything in common with the RN50 and this V50?  Also look at this from a stats POV. There are far more Barretts in the wild, with far more rounds through them, and yet you don't see these types of catastrophic failures causing this kind of injury. Like I said, you need a 50 with safeguards when a KB happens if you want to play. |
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Posted: 4/29/2021 6:13:55 PM EDT
[#31]
Quote HistoryQuoted: ^ Great eye, true, I've read that you are NOT to use a muzzle break while using SLAP rounds. Guys, a brake strike is not going to generate enough backpressure to KB a rifle like this
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Posted: 4/29/2021 6:14:44 PM EDT
[#32]
I don't see anything in common, please explain.
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Posted: 4/29/2021 6:18:08 PM EDT
[#33]
If the break caused the problem should the brake not have some damage to it? This seems unrelated to the brake.
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Posted: 4/29/2021 6:26:35 PM EDT
[#34]
Thank God he's doing okay.
I know most of us don't experiment with stuff like that but hopefully this video reinforces our safety practices during our range trips. |
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Posted: 4/29/2021 6:28:04 PM EDT
[#35]
I doubt that it was from hitting the brake or else the brake would've been blown off.
I think the sabot was the issue, it caused enough pressure in the chamber to KB the rifle. |
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Posted: 4/29/2021 6:29:55 PM EDT
[#36]
Quote HistoryQuoted: Those ears are 1/4" thick and are machined in place out of the lower. The cap is hardened and you can't fire the rifle unless it's screwed all the way in. There's at least half inch of thread contact all the way around the cap, so how would an interrupted thread be stronger? Yeah, I don’t think the design of the rifle is weak, I honestly think it is designed very strong. Unfortunately when it does fail the shooter is the next thing in line. I think of that when I shoot my blaser- extremely strong design, but your face is next. I’m not sure that a failure of this kind with a lug based bolt action would have been that much safer though, I think the lugs could have sheared just the same |
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Posted: 4/29/2021 6:32:32 PM EDT
[#37]
Quote HistoryQuoted: I’m surprised a gun with a .50bmg firing in your face only has a 1.5x factor of safety. 55ksi spec vs 85ksi threads. Plus thy thread engagement length is only like 1/2D of those threads. It may have a higher FOS but given how often KB shoots fatigue could be a factor. Especially if some of the previous shots were as high pressure as that one. People don't think fatigue be like it is but it do |
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Posted: 4/29/2021 6:33:50 PM EDT
[#38]
Holy shit man.
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Posted: 4/29/2021 6:39:55 PM EDT
[#39]
Quote HistoryQuoted: I doubt that it was from hitting the brake or else the brake would've been blown off. I think the sabot was the issue, it caused enough pressure in the chamber to KB the rifle. He said clearly that some of the rounds were loaded hot and did not know that. He thought they were factory mil rounds..he even showed the difference in the size of the fireballs from SLAP round to SLAP round.. |
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Posted: 4/29/2021 6:44:26 PM EDT
[#40]
 Appears only 4 - 4.5 threads are actually engaging when the cap is installed. The front couple of threads appear intact. Hard to tell exactly without seeing the cap. Assuming if this is a typically 70-75% thread depth engagement and looking at this photo it doesn't appear there is a whole lot of metal holding that thing together. If you could hypothetically recover the metal sheared off and weight it compared to the lugs on say an M14 / Garand / M16 / ETC, wonder how it compares. |
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Posted: 4/29/2021 6:46:51 PM EDT
[#41]
Yeah, that guy is lucky.
Serbu build save firearms. This was more of a freak occurrence then the norm. Firearms blow up all the time. I don't doubt that Serbu will be dong a bit of modification to the design. I've had conversations with Mr. Serbu on a firearm that is in the works. One based on the Russian PTRD-41. But in .50BMG. Bolt is S-7 and the receiver extension is 4140. One aspect of the Russian design is that during recoil the bolt opens as the upper recoils back. It's buffered by a spring in the lower butt stock. Very clever design. Mr. Sebu is no dummy but a very intelligent and knowledgeable man. BTW, anybody know what holds the barrel to the receiver? Yep. Threads. So theoretically an overpressure round could blow the barrel out of the receiver. Which it probably has with soem rifle. In any case as far as the RN-50 there is an 18 month wait for one. So I guess a lot of dumb fucks are buying those cheap rifles. |
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Posted: 4/29/2021 6:48:43 PM EDT
[#42]
Damn that’s fucking crazy. I like that guy, glad he made it.
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Posted: 4/29/2021 6:54:35 PM EDT
[#43]
Quote HistoryQuoted: He said clearly that some of the rounds were loaded hot and did not know that. He thought they were factory mil rounds..he even showed the difference in the size of the fireballs from SLAP round to SLAP round.. It was definitely a hot load and at $100 a round who knows where it really came from or what happened to it. I'm sure the rifle is robust but it doesn't look like it went through a ton of development besides making something simple that can handle 50cal. Edit- I'll bet they go back to the drawing table and figure out a better way to put that cap on. Those threads didn't seem to impressive but I understand it's a budget 50. |
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Posted: 4/29/2021 6:58:04 PM EDT
[#44]
Quote HistoryQuoted: I doubt that it was from hitting the brake or else the brake would've been blown off. I think the sabot was the issue, it caused enough pressure in the chamber to KB the rifle. I suspect the same thing. I am by no means a “fiddy” expert but I own/shoot a Serb BFG50 and have always been told NOT to shoot SLAP rounds in a bolt-action or semi-auto rifle. Someone mentioned that the KABOOM rifle’s chamber had been special cut but I didn’t hear that in the video. |
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Posted: 4/29/2021 7:03:46 PM EDT
[#45]
Glad he made it.
Wonder if he knows where the round impacted? |
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Posted: 4/29/2021 7:05:31 PM EDT
[#46]
Quote HistoryQuoted: I suspect the same thing. I am by no means a “fiddy” expert but I own/shoot a Serb BFG50 and have always been told NOT to shoot SLAP rounds in a bolt-action or semi-auto rifle. Someone mentioned that the KABOOM rifle’s chamber had been special cut but I didn’t hear that in the video. Quote HistoryQuoted: Quoted: I doubt that it was from hitting the brake or else the brake would've been blown off. I think the sabot was the issue, it caused enough pressure in the chamber to KB the rifle. I suspect the same thing. I am by no means a “fiddy” expert but I own/shoot a Serb BFG50 and have always been told NOT to shoot SLAP rounds in a bolt-action or semi-auto rifle. Someone mentioned that the KABOOM rifle’s chamber had been special cut but I didn’t hear that in the video. He mentioned it in one of his other videos. |
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Posted: 4/29/2021 7:07:27 PM EDT
[#47]
Quote HistoryQuoted: That design looks a little sketch I am glad it's just not me. That looks like a functional design but inherently dangerous. |
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Posted: 4/29/2021 7:07:52 PM EDT
[#48]
Quote HistoryQuoted: Guys, a brake strike is not going to generate enough backpressure to KB a rifle like this Its shooting sabot rounds thru a brake. Using sabot rounds + a brake is asking for a bore obstruction. |
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Posted: 4/29/2021 7:08:08 PM EDT
[#49]
I had a 37mm launcher kaboom year's ago. It didn't go off at first and when my father in law (who was shooting it) tried charging the handle back again I told him to drop it. No sooner than he let go it blew up.
Scary stuff Just reminds me of that and to never play around with sketchy designs or ammo. |
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Posted: 4/29/2021 7:14:45 PM EDT
[#50]
I think it's safe to say he got very lucky. If he hadn't been wearing safety glasses pretty sure he would have lost an eye.
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