Gixxerman
Senior Airman
from "Axis A/C of WWII" by David Mondey
Max bomb Weight: Bomb load up to 6,614 lbs (3000kg) or 3 Hs 293, 294 or FX-1400 Fritz-X
Ranges vary by marks. Wuzak posted for the A-5. The B-2 was supposed to be able to go 4,970 miles.
The book 'Heinkel He 177, 277 274' by Grielh Dressel talks about there being doubts that the He 277 could live up to that 4,900ml claimed range potential.
I guess we'll never really know for sure.