maybe i'm wrong overall but i like to go for the status and let that do the work the crit doesn't provide much to the secondary fire and the "primary" fire type isn't that good for crit anyway. you can use [Galvanized Acceleration] if you do i suggest dropping [Hunter Track] 1 level making it an 8 cost turning to 4 as it'll be 1 cost more than your limit

if you want to maximize damage without using primed cleanse then take out [Hunter Track] entirely as well and i would say [Critical Deceleration] so you can get over 50% crit and then obviously [Primed Ravage]. next to [Critical Deceleration] [Laser Sight] is next best but only gets you to 44% crit chance while aiming.

cant believe i forgot about this but actually you could save a forma by swapping out [Hunter Track] for [Chilling Reload]. going back to the [Galvanized Acceleration] if you do that i highly recommend dropping 1 rank on [Toxic Barrage] or inferno if you go with this rather than reload.

EDIT: i have realized i am dumb and did not account for best use against corpus being different elements. specifically magnetic and you can utilize both primed elements of shotguns so ill link my second build that ill be basing off the same polarization and add any additional notes i have at that point in that build.

https://overframe.gg/build/411872/

okay kept the naramon and swapped to tact pump to match it on this one (only loosing out on [Hunter Track] this is probably better. strait up add 1 forma if you want to utilized [Galvanized Acceleration]