Chain Gun

The Chain Gun is a weapon dropped from Santa-NK1 that spawns during the Frost Moon event. It is considered an upgrade from the Megashark, with all stats increased excluding the chance to not consume ammo, but it is significantly less accurate. With or without ranged armor, the weapon is quite potent and capable of incredible damage. Explosive Bullets, Ichor Bullets and Chlorophyte Bullets are good types of ammo for this gun.

The best modifier for this weapon is Rapid. The Godly prefix is an alternative if the user prefers not to use as much ammo at the cost of less damage over time. Note that Rapid is only better than Godly if the target's defense is under 24, since a defense of 24 or above will make the damage reduction (relative to Godly) per bullet greater than the added damage from more bullets. This is assuming no bullet damage, high values of which could negate the issue.

The damage per second for Godly will follow the function: DPS=(36+bullet)*60/4*1.09-15*floor(def/2)

The damage per second for Rapid will follow the function: DPS=(31+bullet)*60/3*1.04-20*floor(def/2)