What material is involved with the ignition process in a 30 mm practice round?

The ignition process in a 30 mm practice round relies on black powder. Black powder is a type of propellant that has historically been used in firearms and munitions due to its ability to produce rapid combustion and generate gases that propel a projectile. Its composition allows for a reliable and effective ignition and burn rate, which is critical for the performance of the munition during firing.

In contrast, white phosphorus is primarily used for incendiary effects; ceramic powder is typically found in applications related to structural components or projectiles, not ignition; and lead powder is often related to projectile construction rather than serving as a propellant or igniter in a round. Therefore, black powder is the only option that directly pertains to the ignition mechanism in this specific context.