I figure the answer is either Axton or Krieg, who are the resident boom-boom experts.
Most of Axton’s explosive bonuses (bonii?) are passive (Impact, Steady, Do or Die) with Battlefront only being on while a turret is out.
I don’t have much experience with Krieg but I think some of his explosive buffs are tied to the blood stack mechanic?
Which one of these guys can leverage Tediore throws to the most ridiculous extent?
Which one would be the better option if you wanted to play through the game using the Tediore reload mechanic (rather than simply considering the raid boss chucking potential)?