"Shotguns deal massive damage over short distances. This modified version deals less damage, but has higher accuracy and tighter spread than normal." In-Game Description.
The Accurized Shotgun fires a burst of projectiles that deal damage over short distances. Compared to other shotguns in Tribes: Ascend, this weapon has less projectile spread (thus it's more 'accurate') but deals less damage. This is a hitscan weapon, meaning that it's projectiles will hit their target the instant the trigger is pulled and the player does not need to lead their shots.