Explosive bolt on ballista falconer

Hello guys,
I’m playing falconer ballista right now and it’s pretty good, but it’s still a bit slow to me and I notice node “Explosive delivery”. Just wonder why don’t pick it and make a whole different build for faster clear.
I don’t have enough knowledge about game to theory crafting build so I just wanna know if there is someone has already been working on explosive bolt version of ballista and if they can share it.