What type of powder is commonly used in modern ammunition?

Smokeless powder is commonly used in modern ammunition because it provides a significantly more efficient combustion process compared to older alternatives, such as black powder. Smokeless powder generates much less smoke when ignited, which enhances visibility and reduces the chance of detection in various environments, particularly important for hunters and military applications. Additionally, smokeless powder delivers more consistent velocities and pressures, resulting in improved accuracy and performance of the ammunition. This makes it the preferred choice for both recreational shooting and hunting in contemporary firearms.