I don't have a picture because it was unexpected, but I stacked "Jadakiss" for 123 damage. (max HP is 121, having 99 HP and using an "Anglerfish")
It was a 700mish loot because he was in maxed gear with "Ancestral", but I ended up giving him majority of it back, felt bad lol.
I achieved this by leaving a lot of space between my target and I, I then hit normally with "Ballista" (in Void of course and this is pre-fixed Void mind you) and then I use the "Special Attack" on the Ballista and then I use 1 "Dragon Throwing Axe Special Attack" and they all stacked because of the distance needed to travel, about 1.5 game ticks or so maybe 2, 55 with the regular non-spec Ballista, 58 with the Ballista Special Attack and 10 with the Dragon Throwing Axe.