This is my bucky build. I'm aiming to maximize damage output, while staying alive in cosmic content. 

Nothing is set in stone and always a WIP.

Opening Rotation:

 Hold down left click 

 To apply Vulnerability   

 Drain all charges!
Sig to grab them all 
  To get the buff
 While everything is grouped (cleave execute!!!!)   while buffed. 

 As a filler while mobs are grouped
 Second charge of the sig.

Try to not delay or  as these hit like a truck.

Thanks for reading and enjoy Tahiti!

Updated post crafting!