Yes, there I've be with one opinion with Markoz.

Since the C-130 has a HUGE Range with it's art of built, too few fuel should never be a problem  ;)

Maybe my Test-Results help you:

3.400 Nm is possible with "powerspecificfuelconsumption" enabled

over 4.000 Nm are possible with "powerspecificfuelconsumption" disabled (like in the LC-130)

"Testweather" was "Schönes Wetter" (don't know how it's in the english sim) with no wind and max altitudes (around FL 400) and very few payload (not over 1000 lbs).

So you can take this as a reference if you want.