i've been getting back into blazblue lately and trying to get serious about learning bullet. i wanted to see what the most damage i could do in a combo was, so with the help of dustloop i came up with this. this is like completely optimal conditions, starting with the big fatal counter 5C, 1 level of bullet's heat resource already stocked, and 50% meter. The OD probably won't last long enough to get the enhanced super if you have too much health, either.
FC 5C > 6D > j.623C ~ 623D > 6A > 236[A] > microdash 6A > 6C > jc > j.D > OD > 623B ~ 22D > (3C) > 2363214C
the 3C at the end is optional and won't work if you start this combo with the opponent too close to the corner, which is why i recorded starting with me in the corner.
5C CH > ODC > 6D > j.623C > 623D > 6A > 236[A] > microdash 6A > 41236C > 236D > microdash 6D > 623B > 22D > 2363214C
i found another route that's still tricky but less spacing dependent and also more damage. over 8k!! this one is weird because it cancels the second 6A into miquelet capture (41236C), which is not something i have a lot of practice with. it took a bit of doing to resist the 6A 6C muscle memory from the above combo!
