-Almost the same exact build on my Mutalist Cernos but with Longbow Sharpshot. Can be also used on Cernos Prime.
-Any sort of grouping up is needed. Preferably Ensnare. Primer is not needed Daikyu is too stonks already.
-Gas can trigger headshots for Longbow Sharpshot.
-Split Flights for the massive MS and spreading your shot
-Longbow Sharpshot is 4x multiplier for bows.
-If no Longbow Sharpshot, use Deadhead and replace [Galvanized Aptitude] with [Bladed Rounds] or [Galvanized Scope] or [Amalgam Daikyu Target Acquired] or [Serration] whatever is available for you. Don't put [Hunter Munitions] or [Internal Bleeding]. Getting Stacks for Deadhead on highlevels will be harder as they'll die from slash proc instead of gas procs that can score headshot kills. If you want to though, use Merciless but you'll already be losing so much DPS losing the extra 30% Headshot multiplier from deadhead and you'll barely notice slash actually doing anything if enemies are grouped up as the gas proc from Daikyu is insane.
-Just a personal Fire Rate mod preference on [Primed Shred] for Fire Rate and More Punchthrough for more Gas procs and Headshots when grouped up. If you don't have it, just use Vile Acceleration.
-If you don't like Bane Mods, I am sorry. You'll need it for this build.
-Exilus is not really needed but put whatever you want or just ignore it.
-If you want more upfront damage, use [Serration] but if not use [Galvanized Aptitude]. GA is NOT Multiplicative on [Daikyu] so you're not going to lose too much DPS going for [Serration] in practical use but theoretically if GA is Full Stacks and has all the Status types available for Daikyu present on the target, you're losing 37% more damage. But that's not always the case that's why it's theoretical.
-Internal Bleeding Build is still better for Single Target builds obviously.
-If you're gonna use a riven, replace the one with the same stat depending on your roll.
-If my calc is right as it isn't shown here in overframe,
Burst DPS and Avg Hit with Sharpshot Buff and Full [Galvanized Aptitude] Stacks: 906,098.8 | Sustained DPS: 762,647.2

Burst DPS and Avg Hit with Sharpshot Buff and [Serration]: 571,705.6 | Sustained DPS: 481,194.4

Burst DPS and Avg Hit with Full Deadhead Stacks and 30%Headshot Bonus + Full [Galvanized Aptitude] Stacks: 546,895.57 | Sustained DPS: 460,312.32

Burst DPS and Avg Hit with Full Deadhead Stacks and 30%Headshot Bonus + Full [Galvanized Scope] Stacks: 590,421.78 | Sustained DPS:
496,947.49

Burst DPS and Avg Hit with Full Deadhead Stacks and 30%Headshot Bonus + [Bladed Rounds]: 497,245.71 | Sustained DPS: 418,522.91

Burst DPS and Avg Hit with Full Deadhead Stacks and 30%Headshot Bonus + [Amalgam Daikyu Target Acquired]: 508,602.33 | Sustained DPS: 428,081.61

Burst DPS and Avg Hit with Full Deadhead Stacks and 30%Headshot Bonus + [Serration]: 438,217.78 | Sustained DPS: 368,840.16

With all of that being said, with regards to using Deadhead instead of Sharpshot, [Amalgam Daikyu Target Acquired] and [Bladed Rounds] are the best and most consistent and are most realistic as you just have to score headshot and the latter is just kill and aim.

Rolls just for this build Not in general:
Positives-CD//FR/CC/MS/DMG/SC/Heat/Tox/Punch through
-Rolls with element preferably also has SC in it but it's not the end of the world. Rolls with PT on it preferably has CD or Fire Rate or Elem or Dmg

Negatives-zoom/+weapon recoil/-IPS/-magcap/-ammomax(kinda bad depending on how much you spam without looting)/-inf(kinda bad if for some reason you use [Daikyu] on infestation)

PS: Longbow Sharpshot is Insane and Same build can be used on [Cernos Prime] but replace GA with other damage mods since it's only 50% effective on Charged shots but if you're going to spam quickshots on it, just stick to GA.