This weapon has elemental damage type. However, when the shots become larger at long distance, they deal normal damage.
As an example, against something weak to elemental, it dealt 19 damage at close range. But at long range, it dealt 18. This makes no sense since it's supposed to do more damage at long range.
I don't have the later weapons in the same line so I can't say if those have the same bug.
Just upgraded ot the Gigawatt Pulsar. It does the same thing.