Surprisingly, this thing actually melts. You can go with the Tremor but I wanted the extra range.

Why does it melt? Simply because of the status. Sure the status chance is low, however the fire rate makes up for it and your damage gets amplified quickly. You will quickly [Shred] through high level enemies.

Now, you could use [Hunter Munitions] in place of [Vile Acceleration]. What this will do (in level 100+) is slightly increase your time to kill against most trash but kill things like heavy gunners much quicker with body shots (headshot kills are still quick either way). Pick your poison. [Hunter Munitions] is also more ammo efficient if you're worried about ammo. Personal preference.