You won't be rolling over SP with this, but it works decently.

Ice Storm is mandatory to achieve 4 shots with the increased magazine capacity.
Switch to Mag/Tox when against Corpus (or don't, I'm a stranger on the internet, not your mom).

Arcane is optional but this thing pops so much status per shot, secondary encumber works very well.

If you don't have a riven, go with [Lethal Torrent] instead.
If you have a riven, try to roll for multishot, reload speed and maybe punch through, bonus points if you have a useless malus (like minus zoom).