Mechanics - Modifiers - Range
Ranged weapons have distance increments indicated in their stats.
When a target is:
Within the first increment, there is no penalty to shoot.
Between first and second increments, -2 dice to shoot.
Between second and third increments, -4 dice to shoot.
Beyond the third increment, penalties vary but at least -6. Wind, visibility, and the condition of the firearm become much more of an issue beyond the third increment. Most game combats will probably not happen at such distances anyway.