No, no, no, no, no, and also, no. Physically impossible. The blowups that are blamed on "detonations" are in fact, the result of double, triple, and even quadruple charging. With many firearms, in fact, a double won't do it; has to be a triple or more. The whole "detonation" thing is utterly nonsensical and illogical, and goes utterly contrary to all known real laws of physics.
Gunpowder contains enough oxygen to burn itself completely, so dispersion makes no real difference to the amount of oxygen available (unlike explosions of flour, cornstarch, etc., which do not contain oxygen).
Gunpowder burns very, very quickly already, and it's not going to burn with any noticably greater speed no matter how you ignite it, plus such small charges will already be mostly exposed to the priming flame anyway. People have already tried messing with various stuff to try and get powder to burn faster, like the latest trend of making short, fat, magnum calibers, which supposedly ignite faster because more of the powder is closer to the primer. But for a given case volume, powder charge, and bullet, the teapot magnums have a less than 2% increase in muzzle velocity. People have also done fancy junk with tubes attached to the flash hole so that the primer lights up the charge from the front, or the center. Once again, insignificant differences. Considering the amount of blast that a primer produces (when used to shoot a .22 caliber pellet, the energy rivals mid-range pellet rifles), the turbulence from ignition is more than enough to "suspend" the powder inside the case, moments before ignition.
And "bullet jump" will only lower pressure in the chamber, not increase it. All that would happen with a "jumped" bullet is basically the equivalent of firing the same powder charge in a much larger case. You may have more pressure compared to a normal cartridge for when the bullet is in the same part of the barrel, because of increased friction, but there's no physical way it could exceed the normal maximum chamber pressure, and you'd be very hard pressed to find a gun with a weak enough barrel to be damaged by that, yet not by normal firing. I swear, one of these days I'm going to jam a bullet in a gun, and fire a regular powder charge to prove it (and the reason why you shouldn't unstick a bullet using a regular blank is because blanks are typically loaded with huge charges of very fast burning powder, rather than the normal charge, because a normal charge would just go "phhhht" when fired instead of "bang"). Why do you have to use a heavy roll crimp when using big charges of slow powders? Not because of some mythical bullet jump pressure spike, but because pressure drops, and velocity becomes anemic and inconsistent. Same reason why manufacturers say not to go below minimums with certain slow burning powders; too light of a charge will fizzle, and get a bullet stuck in the bore.
In short, it has never happened, and will never happen. Some idiot made up the theory to cover up the fact that he blew up a gun with a triple (or more) charged case, and a legend was born. And people continue to say "oh, it was a detonation!" because they refuse to admit the possibility that they double charged a case, or used the wrong powder, or whatever. It's really just the same old idiocy the human race is fond of, blaming inanimate objects rather than themselves.
This crap is right up there with "armor piercing bullets make holes through metal because the energy gets turned into heat and melts the metal!" and "a barrel gets ringed because the bullet's energy melts the barrel in one spot when it suddenly starts to move!" and all that other crap that somehow manages to lure in those that should know better. It may impress people to whom things like fire and the wheel may as well be magic, but to people that actually have some idea of how physics work...
