2.300nm for the 60 it´s a lot and if you´re flying into Russia expect delays on approach. Last flight 1 week ago I did 1.950nm and I had to skip some thurderstorms, total flight time was 4:50 and landed with 1.500lbs. We flew at M0.76. Those are real numbers.
I normally do 4 hour flights (1.600nm) and we always land with 2.000 2.400lbs left