Thank you for giving the build a try! Most of the strategy elements and build gameplay vids are covered in the top 3 posts. There is definitely some room for every player to have their own “style” but I can recap my personal methods if it helps
First, I like to open with the Lucien’s Call. Usually I will target the healthiest enemy or maybe one with a shield so there is more time for potential bullet ricochet to other targets and more time to proc Hunter Kill Skills through the Bounty Hunter mod.
Next, I trigger FA throw at least one Hex grenade. The goal is to have enemies under dual de-buffs from the freeze and irradiated statuses.
Once I find a low-health enemy affected by dual buffs, I go for my first kill with the OPC, hopefully beginning an overkill chain. If all goes well the enemy drops and explodes and triggers 2 novas. 1 nova is from dying under irradiated status and spreads to nearby enemies (probably frozen in place near the first target). the 2nd is from the guardian hollowpoint skill that triggers upon killing an enemy with a crit shot. The bullet will also ricochet to another enemy/group and trigger the same effects if the target drops,
I repeat this process for the remaining 2 shots in FA. If I drop the overkill chain, I switch to a supplementary weapon like a Torgue shotgun or Hellwalker for burst damage from the remaining shots.
Depending on what’s left alive after that, I either restart the cycle, or keep using the OPC until my next FA trigger.