Hit the target first with 1-3 aoe attacks While ur getting close to preprime with Cold,Heat & some Blast + Viral To really scale [Galvanized Shot] & Buildup some Cascadia Flare power before u go in for the Charged shot kill (Headshot preferably) & most things will die in 1 or 2 hits :) Has the potential of 40-50 million Headshot crits roughly speaking.

Playing [Sevagoth] also applies an additional Headshot multiplier :)
Plays really crazy good on [Mirage] with 600% Eclipse & Doppelgangers , since the Epitapth AoE from doppelgangers pr shot will shotgun + the Raw dmg increase is insane.

Link to my Mirage build 8 times More dps

u could always run Galva Crosshairs over [Lethal Torrent], but ur general aoe run & gun pump would be worse off.
My setup is a good mixture of both aoe & single charged shot.

[Trick Mag] is optional but basically doubles ur ammo pool if u just wanna braindead spam abit more ;) either that or Recoil reduction for the charge shooting.

(U could also try the new Weakpoint mod turning this into an insane headshotter) But u would lose the Aoe Priming & the multishot aspect of it.
U would have to go [Primed Convulsion] & [Primed Heated Charge] for Raw dmg & Pistol Acuity + [Galvanized Crosshairs] & Aptitude + Secondary Deadhead for Getting multiplicative Crit & Raw elemental headshot scaling.
That setup is purely for headshot & 1 shot purposes & not really my style but it can be alot of fun if u only want high single burst.

Thanks for the all upvotes <3