Which of the following is not a factor in balancing speed and accuracy in gunnery?

The selection of ammunition is primarily focused on the type and characteristics of the ammunition used for a mission, rather than directly influencing the balance of speed and accuracy during gunnery operations. While the choice of ammunition can affect performance aspects like penetration, velocity, and lethality, it does not inherently dictate the urgency or precision required during firing.

In contrast, environmental conditions—such as wind, visibility, and terrain—can significantly impact both the speed at which a shooter can effectively engage targets and the accuracy of their fire. Troop coordination is essential for ensuring that all personnel involved in an operation are synchronized, which can affect response times and the ability to fire accurately as a unit. Time constraints can impose urgency on a mission, requiring personnel to prioritize rapid engagement without compromising accuracy. Thus, while these factors are critical in the larger context of gunnery, the selection of ammunition stands apart as less relevant to the specific dynamics of balancing speed and accuracy in a firefight.