Depends entirely on the type of gun.
"The proper way to clean a gun is to make sure it is not loaded, spray it with cleaning supplies to get all the gun powder out and then put it back together."
The gun should be 8 to 10 inches from the surface. Be sure to hold the gun square to the surface, and overlap passes by 50%.
Keeps guns from clogging orifices on your spray gun.
Black Powder.
Gun powder is always a mixture.
gun powder was udes for fireworks, then weapons
When The Percussion Cap That The Hammer Hits Ignites The Gun Powder, The Powder Turns Into A Gas Which Expands In The Chamber Of The Gun Sending The Bullet At A Very High Rate Out The Barrel.
Gun Powder is the most important thing in a war because if you don't have gun powder you wouldn't stand a chance.
If you have a good spray gun and a small compressor,that's a better way.
I am going to punt here, "How far does gun powder go when you shoot a gun"? It will leave the bore and go about 2-3(perhaps more depending on burn rate and size of powder) feet before dissipating completely. Close range (contact and 2-3 feet) gun shots often result in powder burns around the penetrating point. It is commonly used to gauge the distance from muzzle to point of impact for forensic purposes.
Gun powder is a powder.
Because China invented gun powder.