I may have missed it, but is there a definitive answer on what went wrong? Upthread was mentioned that this gun had a repeatable issue feeding the last round, but no other issues. Are we sure of the bolt-not-closed-properly diagnosis?
Putting myself in that shooter's role, and turning the clock back, the first time it failed to feed the last round, I'd extract it, do as thorough a check as I could at the range, and seeing no obstruction in the barrel, reload and continue shooting. The first few times, even if it failed to feed the last round, I'd figure it was a spring issue or something. I wouldn't imagine it was a critical problem like that!
So, when it came to the time of the video, I would do what had always worked in the past. Knowing the rifle had "character" - and didn't like to give up that last round - just clear it, and shoot. Except this time, big bad boom!
I guess complacency is the main enemy here. You get used to one minor problem, then you get a major problem that looks like a minor problem, and almost end up going to the hospital. Honestly, I've never seen a firearm blow up from the bolt not being closed, but that seemed like an awfully big result from something like that, especially since if it was still open, it was just a little bit. But, I like said, I don't have anything to compare it to! (And I hope not to ever witness something like that in person!)
I wonder if it was one of those springfield armory or other clone guns or if it was an original military issue?
M1's have a common problem known as the 7th rd stoppage,which it appears this was.
If you read the womans comment fron the video, she said they were using "new ammo" I read that as current production. Which without the adjustable gas plug is a no-no.
Could have been one of the "reweld" recievers we hear bad things about.
DragonGunner,
If I remember correctly, the 7th rd stoppage was something to do with either the bullet guide or the clip latch. I don't remember if it was from a out of spec or faulty design.
That being said I don't think the stoppage in the video had anything to do with the kaboom unless the 7th round bullet was left in the bore upon extraction and shoved in further by the 8th causing a blocked bore.
My personal theory is current production ammo with to high of pressure being used.