I've heard that theory too, it's why it's typically recommended to not use loads of slow powders less than around 65%.
The trouble with detecting early warning signs and or pressure events that don't cause complete failures, I think, is the time scale of these events.
A "normal" pressure rise is in the neighborhood of .00025 seconds. A pressure event that burns all that powder fast enough to create the pressure which would be needed to blow up a gun, pressures that are 2x normal max and something like 4 or 5x the indicated pressure of these loads, might take like .00005 seconds or something.
Maybe detectable with the right equipment but probably not in the $400 price range of RSI Pressure Trace and similar consumer level equipment.
Still happily answering to the call-sign Peetza.
You do not HAVE a soul. You ARE a soul. You HAVE a body.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.