In this article, the authors consider problems that affect the combat characteristics in the combat use of self-propelled artillery systems. With the understanding that one of the important characteristics is the speed of setting the firing data and aiming the gun at the target, the aim is to reduce the needed time while maintaining or even increasing the accuracy compared to the traditionally used methods. The authors’ proposal is to introduce automatic compensation taking into account the longitudinal and transverse tilt of the machine at the firing position when determining the direction of the gun body of the self-propelled artillery installation, the determination of the elevation angle, and the angle between the main direction of fire and the direction of the target. The authors consider two options for determining the self-propelled artillery system’s own spatial position: using an inertial navigation sensor and using digital terrain height data. In the case of applying digital terrain data, the authors present results from simulation experiments conducted in laboratory conditions.