To mitigate DAIKYU's weakness of being a single target weapon we need to choose between one of the 3 aoe status effects - gas, eletric, blast.
Blast is my pick, because it has the highest range of 5m and is the best at having good odds of proccing.

Making a headshot and not having everything explode feels bad, so I run [Hammer Shot] and [Thermite Rounds] for the status chance. [Primed Cryo Rounds] is used over [Rime Rounds], because while the status chance is lower, the higher weighting of blast results in higher odds of getting at least one blast proc (73.49% vs 66.94).

Galvanized Aptittude isn't used, because priming would just slow you down unless done by a companion, and cause Longbow Sharpshot doesn't multiply it for some reason.
[Vile Acceleration] is it feels better to use. Other mods are for maximizing damage.