Too little powder happens at varying levels due to case capacity (not all cases, even of the same caliber, are the same), powder density and burn rate, primer brisance, temperature, pressure build up, and too many other factors to list. The instantaneous ignition of powder and rapid pressure rise (called detonation) has not been replicated in a controlled setting as far as I know but is a possible factor in the destruction of some handguns. More commonly one ends up with squib loads that leave a bullet or worse yet, the jacket lodged in the barrel. Follow up shots with that obstruction are typically catastrophic.
Best advice is to follow published minimums as any other is fraught with risk. Putting one's self in jeopardy over foolishness is one thing; putting others who may happen to be nearby at that same risk is something else.
Best advice is to follow published minimums as any other is fraught with risk. Putting one's self in jeopardy over foolishness is one thing; putting others who may happen to be nearby at that same risk is something else.