Some have been on my mind for long, but other might be handpicked details occuring in the postings and debate at the forum!
[edited: As pr June 2017 I have fullfilled some of my postings with details ocurring among comments!]
Depending on the range of mission could the B-17 load up to 8000lb of bombs.
Machinegun ammunition had a total weight of 3300lb
The 13 Browning M2's including the bracings without turrets had about the same weight.
The eight gunners would weight aprox. The half.
In total weighed the defencies of the B-17 More than the bombs delievered :-o
Edited by Armand, 02 July 2017 - 11:44 AM.