https://overframe.gg/build/465699/strun-prime/exploding-edge-incarnon-strun-viral-slash-400-status-variants/

Strun Prime has approximately 16% more slash status DPS using this specific build.
Strun Wraith has approximately 2% more raw elemental DPS without counting viral procs.

EVOLUTION II : Blazing Barrel - gives multishot

EVOLUTION III : Rapid Reinforcement gives +60% reload speed to the insanely long base reload speed of the non-incarnon form of 4.6s. Stacks with +30% from Primary Merciless so the final reload speed is 2.4s. Reload speed also affects the transformation speed into incarnon mode.

EVOLUTION IV : Elemental Balance gives +11.3% status chance to EACH pellet on the base form. Since Strun Prime has 12 innate multishot, you end up with a total base status chance of 46 + 12*11.3=182% upon transforming since the incarnon form only has 1 base multishot. This means with just two 60% status mods, we can hit 182 x (1+0.6+0.6)=400.4 % status chance, i.e. guaranteed FOUR status effects per shot, before multishot. With 3 multishot we basically get TWELVE guaranteed statuses per trigger pull. At approximately 40% slash bias, we can get approximately 4 to 6 slash procs every fire.

FLEXIBLE/ALTERNATIVES

[Motus Setup] provides more potential DPS than [Sweeping Serration] but requires you to bullet jump every 4s.
[Shotgun Savvy] provides status chance which increases overall slash and viral procs, but does not boost the weighting.
Galvanized Savvy gives slightly less status chance than Shotgun Savvy, but provides +80% dmg for each status when using BASE FORM ONLY. [Galvanized Savvy] does NOT apply to the AOE of the incarnon form. You can use this if you like using both forms.
Hunter Munitions provides an extra 30% chance per hit on crit to create a slash proc, which is worse than relying on natural slash status.
ELEMENTAL VARIATIONS

Toxin for corpus: Swap Sweeping Serration and Frigid blast out for Contagious Spread + Primed Point Blank/Motus Setup/Galv Savvy
Viral Electric for Murmurs or with Grouping: Swap Sweeping Serration for Primed Charged Shell (and make sure to reorder electric mod to last slot)
RIVEN
Ideal riven roll would be +CD/MS/CC/status chance/FR. Slash would be a good roll too for a dedicated grineer/corrupted biuld