BCL 102 catastrophic failure

Glad you are ok, I have had 3 Kbs through the years and they are never fun. I couldn't imagine the shock from a .308 going the wrong way.[/QUOTE]

Scared the crap out me. The bottom of the mag blew out sending remaining rounds, spring, plastic and mag base everywhere. Black smoke and fire out of ejection port. Got a nice bruise on my cheek and some scorched marks on safety glasses. Could have been a lot worse.

Whats a KBS?
 
slash547 said:
Thanks, I'll try this tonight on home laptop, can't download at work
The 308 brass is crushed to half its length and a big blow out holes at the bottom. It was a reload, could it have been too hot a load? Can't see it being that hot as the 44grns I use without issue to date fills almost the entire brass. Had I accidentally double loaded it would overflow big time and I would have caught it.
And the other odd thing is the neck is crushed on one side. makes no sense.

I'll try and load pics tonight
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AF1QipP8k07qT8TIiPtRFNgEjrddPku0Ca-nv8C8lfWR

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Click to expand...


For whatever reason, I cannot see your photos.

The use of handloaded ammunition will void any manufacturer's warranty.

It sounds as if you had a catastrophic case failure, with the damage caused by release of high pressure gas. Years ago, I saw am original AI AR-10 which had its upper and lower receivers destroyed by such a mishap.

The cause of the case failure is most likely related to the cartridge being handloaded. Obviously this was not a double charge of powder.
Think carefully about the history of your reloads. The answer may lie there.
 
Ya I’d look at your reloads I’m bout 1k through mine factory ammo only, the only problem iv had was the gas rings but I had a recall for that and it’s still chugging after getting replacement rings.
 
i'm still trying to grasp how the case imploded like that, as if it was squished and rolled in on itself.
would love to know what other's theory is on what would cause the case to deform like that on the forward end.
The case head rupture is obvious and commonly seen in an out of battery but the forward portion of that case is a head scratcher if , like he says, all the ejected brass was fine.
I've taken apart a blown up M1A that the owner and several others who looked at the rifle's pieces tried to figure out what went wrong. The case was coned up and rolled in on itself, similar to the pics here. The case head was torn right off in this case but the end result was catasprophic to the rifle's right bolt lug, safety bridge and the magazine was toast and blown apart. The shooter received face, neck and arm injuries , all requiring medical attention and stiches.
In the end when I scoped and cast the chamber, I found only the neck portion of a case stuck fast and fire formed to the chamber. We surmised that the round that blew up had almost fully chambered despite the stuck piece of neck and the rifle's safety features failed to prevent an out of battery detonation.
Yes.... it was the ammunition's fault the incident occurred...… but it was an out of spec safety bridge that allowed the firing pin to set the round off.


anyhow..... that's why I suggested my original theory, based on the pic of the brass.
 
Hello all. Two of the pics loaded fine but the rest did not. Same procedure. I noticed the two that worked had really long URL where the ones that didn’t were short, one liners. I’ll open up the BCL tonight to see iF the casing neck is fused in the chamber and work on more pics. To see this KB brass is a WTF is that pic.
 
Tear down the rest of those reloads, is it possible one/some got pistol powder in them? Sometimes guys forget about the charge in the dispenser.
 
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