Yes, Murdr is right about our recent tests @ 8 x 1,000 lb. bombs and as of yesterday, it was still the same.
Remember that a bomb missing the CV does not explode. You must hit the CV and being close doesn't count.
I can't tell you how many times I've been on a CV and watched the bombs miss the ship, go in the water and destroy a CV anyway... it's happened more times than i care to guess.
12,000 is what I heard but glad to hear test says 8,000. (Was test done in main?)
I've been sinking them successfully using all the Ju-88 500's (12 x 1100 =13,200)
If i drop just a salvo of 3 which = 9900 pounds it stays afloat. Maybe i miss a few doing it that way, i don't know.