I dont know about the blow ups just asking dont the spanish have a gov proof house? seems like all the othe european contries do.10,000lb does not seem like much of a proof load.I would think that 20, would be more like it.steel tubing will hold 30 or so.just asking.
They do not test for a max pressure, or a burst strength.
They do not know what that might be.
Does not mean a Spanish barrel will not shoot well. It just will not accept the current trend of trying to get a muzzleloader to shoot like a centerfire.