Infinite BB should be possible, and extremely easy by overkilling the target.

I did the first test in MP (basically with as much overkill points as possible) and all my units filled their SBB Gauges.

Team:

• Elza (L)
• Dilma
• Maxwell
• Zelnite
• Uda
• Elza (F)

Basically I killed off the other units in metal parade, leaving one mob left.

BB Order: Dilma -> Elza -> Elza -> Maxwell -> Zelnite -> Uda.

Empty:

Test 1: http://imgur.com/Ayle5SU

Test 2: http://imgur.com/EuKKVej

Full:

Test 1: http://imgur.com/UX1M1R8

Test 2: http://imgur.com/wQmRfGr

The Math: Dilma's first hit ignore's defense, so every hit after that is overkill and has doubled dropchecks.

The total amount of dropchecks are: (12 12 x 2) ^Dilma (30 x 2) ^Elza (30 x 2) ^Elza (33 x 2) ^Maxwell (17 * 2) ^Zelnite (15*2) ^Uda = 286 DC Total

Average amount of BC dropped: 286 DC x (.35 ^base .25^Uda) = 286 x .60 = 171.6 Average BC produced. I rounded down to 168 BC to compensate for some variability as well as to simplify the further math.

This BC is doubled because of the Dual Ares LS, and changes into 336 BC total for the whole party. Distributed across 6 units, this is an average of 56 BC for each unit. The highest BC requirement in this party is Maxwell, who takes 49 BC to fill. 49 - 8 ^{Zelnite BC Insta-Fill} = 41 BC, which is comfortably under the averaged generated of 56 BC (In fact, it is more than 3 Standard Deviations ^{SD = 4.9} away from the expected value, which is less than a 3% chance of the gauges not filling).

This isn't the most practical example, because in a realistic situation you're not going to be overkilling every target this much. I'm still doing testing, but it seems possible to maintain infinite BB Spam on a single target with Ardin (L), Faris, Deemo, Darvanshel, Kuhla, and Ulkina (F), but this team is pretty fragile and requires you to constantly change the BB order. I will post the final results of this test later.

Please note that I calculated this with no sparks at all and with no spheres, so in theory, by sparking and equipping BC-Gen Spheres. you should be able to maintain infinite SBB even when you don't kill the enemy.

What do you guys think? I can see the Infinite BB-Spam being used as a replacement for fights where you don't have Lily and still need to maintain BB-Gauges, but as of right now this whole concept isn't really viable for anything you couldn't kill anyways.