I have worked on grain elevator shut downs. The first thing we did was open everything up and place fans in open areas to clear the grain dust. Once the air was clear we did not worry about explosions.
I don't see how a spark from static can set off gunpowder. While people use electricity to set off charges and fire weapons they are using a cocktail of chemicals to create enough of a "primer."
The friction of grain moving thru a hose or tube creates very high electrical charges. These conveyors are normally grounded. Grain dust, coal dust or slurry can be set off by friction.
Powder in ctgs. or normal reloading can not generate high levels of friction induced impulses.
The odds of static round discharge are probably about as high as your cell phone igniting the gas pump while refueling. Almost non-existant, but in the absolute perfect situation (read: only the mythbusters could create this) it could happen
A good plan executed today is better than a perfect plan executed at some indefinite point in the future.
- General George Patton Jr