SO
T7 = 2 each
T8 = 2each (heard sometimes 3)

what about T9 and T10? and can anyone confirm that T8 sometimes drops 3?

Just did 5x T10 uber rounds last nite.

Minimum drop: 2
Maximum drop: 3

At least those were what I've got.

Managed to craft 11x at the end of the run. 1 being totally decent.

im not 100% sure of the accuracy of this scale but http://forums.d2jsp.org/topic.php?t=73166493&f=142 has a list of all that