alexgv1: Yes, the climb does not have to be what I call aggressive. You can climb with highest ITT temperature or a more shallow climb with higher ground speed but less vertical speed.
LWIEV: How does the figure 500 come up? Well, pilots are lazy and 500 is a nice and easy, round number for mental calculations :-)
sami: I will have a look at the AFM and see what I can find. In the mean time I enclose a pic I took yesterday of our (full) flight, showing OPS calculations of 711 kgs of fuel for a 1:47 flight. That equals 400 kgs/hr, and includes the higher climb consumption. Although it is an 340A, not 340B. The latter I know has better performance and more powerful engines. The consumption would most likely be a little bit higher.