Originally Posted By: 2-piper
When used in explosive devices, the main cause of damage from a detonation is the supersonic blast front (a powerful shock wave) in the surrounding area. This is a significant distinction from deflagrations where the exothermic wave is subsonic and maximum pressures are at most one eighth[citation needed] as great. Therefore, detonation is a feature for destructive purpose while deflagration is favored for the acceleration of firearms' projectiles. However, detonation waves may also be used for less destructive purposes, including deposition of coatings to a surface[25] or cleaning of equipment (e.g. slag removal[26]) and even explosively welding together metals that would otherwise fail to fuse. Pulse detonation engines use the detonation wave for aerospace propulsion.[27] The first flight of an aircraft powered by a pulse detonation engine took place at the Mojave Air & Space Port on January 31, 2008.[28]

So very often we hear a very rapid Deflagration described as a Detonation, but they are Horses of Two different colors or Apples & Oranges, however, one prefers to put it. Purely & simply the charge in this gun in question did not detonate.
OK. So a pipe bomb loaded with Green Dot doesnt actually detonate?