Yes, I remember the pre-Internet rumor of the cause of the "Bullseye Surprise" being rather soundly debunked.Charlie Petty said:[quoteTakes a high-order of detonation to remove the topstrap, let alone, remove the adjacent chambers.]
Not so. 75- 80,000 psi will do it.
While it is a handy excuse to say "detonation" nobody has ever been able to produce it in a laboratory.
This is something I have really studied but the best documentation was provided by the NRA and H.P. White that was published in the December, 1978 American Rifleman. At that time people were claiming that a charge of 2.7 gr. Bullseye in a .38 Special "detonated" and produced exactly the destruction shown.
They used pressure test equipment and even went so far as to replace the primer with PETN (balasting cap stuff) and could not get anywhere. They finally were able to blow guns up at will, but only with a double charge (5.4 gr.) AND seating the wadcutter bullet below the case mouth by 3/16". That gave a pressure of 76,100 psi and a catastrophic failure. A simple double charge only gave 32,300 psi.