I duped your post lol. Sorry bout that but delete seems to work well hahaha
Watched that video in .25 speed. This guy is very lucky to be alive.
In my worthless opinion if the normal working pressure is 55,000 he experienced far more than the 85000 mentioned. 85k would be around proof testing level and the gun should withstand that. IMO he probably saw something closer to double working pressure (110k). Catastrophic failure depends on design parameters and single shot actions such as his are as strong as it gets.