File:Special Duration Up Count Chart.png

Formula
x = 10*MainSlots+3*SubSlots

A = % Change for Bomb Rush and Inkzooka = (0.99*x-(0.09*x)^2)/50

Number of bombs or Inkzooka shots = [Special Duration]/[Time Per Shot]

Bomb Rush normally lasts 360 frames. Inkzooka normally lasts 394 frames. It takes 22 frames per Burst Bomb, 31 per Splat/Suction Bomb, 35 per seeker. Inkzooka has a delay before the first shot of 55 frames, and then 62 frames for all other shots.

Burst Bomb Count = (360*(1+A))/22

Splat/Suction Bomb Count = (360*(1+A))/31

Seeker Count = (360*(1+A))/35

Inkzooka Shot Count = 1+(394*(1+A)-55)/62

Round down to a whole number for the final value.