lazyengineer Wrote:It never creeped out - and there is no speculation- it's staring us in the face, and the heavily quoted Alexander confirms that a chamber dimension needs to be just so with that brass. Walls don't hold pressure, they are a gasket. Case heads hold pressure. No case head where there is no chamber wall = not holding pressure.
Lazy,
The only thing 'staring us in the face', are the pieces of a catastrophic failure, and even in that there is a lot of information missing. For example, how the round was assembled by the OP at the time and its actual specs. Yes, that Lapua case failed, but that does not prove it is the cause. It could be a host of other reasons that have nothing to do with the brass manufacturer. And until you can rule out all other possible causes you cannot say with confidence it was Lapua's fault.
The only other potential cause you can confidently rule out is Hornady, and every other gun manufacturer, every other powder and powder manufacturer, etc. Yes, it was not a Hornady case in the breech at the time. But that does not prove which brass is stronger. It is just one piece of evidence.
That the case was Lapua and implying it was the cause, then generalizing to all Lapua brass beggars belief. Please stop with the Lapua hate, it is hijacking the thread.