Which ZM weapon deals the highest explosive damage?

FAL Custom-Devastation LV3: ~(1855 + 1390 + 830) DMG/shot x 10 shot = 40750 DMG.
AA12 Buster LV7 (+3 Ammo): ~2470 DMG/shot x 15 shot = 37050 DMG.
AA12 Buster LV7 (+2 Ammo): ~2470 DMG/shot x 14 shot = 34580 DMG.
AK-47-Buster-Ice (Zilong): ~(1440 + 1075 + 715) DMG/shot x 10 shot = 32300 DMG.
AA12 Buster LV7 (+1 Ammo): ~2470 DMG/shot x 13 shot = 32110 DMG.
AA12 Buster LV7 (+0 Ammo): ~2470 DMG/shot x 12 shot = 29640 DMG.
AK-47-Buster-Gold: ~(1235 + 925 + 615) DMG/shot x 10 shot = 27750 DMG.
So far FAL Custom-Devastation LV3 should be the best.

[@Arthurcollins.]

How about raw damage?

[@reyzamora4525]

AA-12 BUSTER FIRE MAX, cause it deals a crit hit, and at the same time it has a ignite causing the ice boss get crit hit.

[@namvu2525]

Ignite damage is only 150dmg per second and Ignite duration is not stackable, means a 14 rounds AA-12-Buster-Fire can contribute only around 8-9 seconds ignite damage = 9x150 = 1350, which is not alot. Critical rate in these maps doesn't apply or just very slightly increase the damage (2470 DMG - 2555 DMG)