I'm sure the stats here don't do this justice. Was looking into 0 forma builds to decide how to run my [Ivara Prime]'s bow since I'm doing a 0 forma build on her, too. Mostly just using her for stealth scanning.

Every other build I saw with 0 forma used [Split Chamber] so I was curious and figured out that for the same cost on innate polarity slot, I can use [Galvanized Chamber]. The rest is based on buffing the already high crit stats and multishot, then making use of the fact that it will shoot around 20 arrows with how much multishot I gave it.

[Hunter Munitions] is great because with a 75% crit rate and 4.4x multiplier, there will be some very strong slash procs even without having a good status chance.

I chose [Infected Clip] for the status in last slot because of Toxin bypassing shields, but it can be swapped for any other element if you want. You can even put [Vigilante Armaments] into that slot and put [Cryo Rounds].

Also, you can use a couple arcanes on your [Ivara] depending on how you want to adjust this weapon. Arcane Acceleration can give more fire rate, so faster charge rate and it only takes critical hits to trigger. If you are more accurate in your shots (which is very easy with being able to be stealthed permanently), you can use Arcane [Rage] to improve damage on headshot. And with how many arrows it fires, headshots are pretty easy.

Hopefully this gives you a good starting spot for this weapon as well as my thought process on getting good use out of it even without more investment. A paper DPS of 60-70k is pretty good, especially since it doesn't include the base multishot into that equation. True multishot for this build is 16.8 before building stacks on [Galvanized Chamber] and going up to 23.1 after building it. And remember that the main difference in tap versus charge on this bow are in arrow spread and speed. Tap will have a vertical line of arrows and hold will have a horizontal spread of arrows. So, if you are only facing one enemy, tap will get you faster shots with just as much damage and it will have a pretty good chance of at least one of them being a headshot. Hold can do a fan of arrows across a line of enemies at head height to get multiple headshots at once