I think you're falling to the temptation in discussion of, when you don't like the premise under discussion you'll just change the premise and have a discussion about that instead. It's what politicians do all the time when being asked questions they don't want to answer i.e. they'll evade by choosing to answer a different question to the one that was actually asked.
What am I talking about?
Well, the video posted, showing a selection of various brands of rifles' barrels 'erupting', was made by first blocking the barrels of those rifles and testing to see where they would fail by firing a cartridge off in them. The quite horrific injuries that have been reported by unfortunate R93 owners don't seem to arise as a result of barrel explosions, per se. That is to say the video has nothing whatsoever to do with the issue that seems to be being put forward as a potentially real problem for Blaser owners. The actual Blaser issue seems, from all the threads across many forums that I've seen it discussed in, to be narrowed down to a specific matter of catastrophic cartridge case failure and the consequent 'unlocking' and launching of Blaser bolts and their attendant closing mechanisms backwards, which has been caused by the back flow of gas and the effect that has on the bolt locking, into and injuring the hands and faces of those unfortunate souls behind the trigger when it has all gone mammaries skyward.
Perhaps I'm being cynical but I note quite a few people have on this and other threads failed to address the actual issue that's up for discussion, apparently preferring instead to evade it and deflect to a different issue.