US Army Sniper School Practice Test

Smokeless powder is primarily composed of two types known as single-based and double-based.

Single-based smokeless powder contains nitrocellulose as its sole propellant material. This type is favored for its simplicity and characteristics, which provide a stable burn rate and effective performance in firearms.

Double-based smokeless powder incorporates both nitrocellulose and nitroglycerin. The addition of nitroglycerin enhances the energy output of the propellant, leading to increased velocities and improved performance in various ammunition applications. The dual composition allows for a more versatile powder that can be used in larger calibers or specific tactical situations.

Understanding these two compositions is crucial for snipers and marksmen, as it influences the types of ammunition they select for different missions and the expected performance of their firearms.