referring to my previous post: not correct!
sorry folks, google and co. weren't able to find this nice little drawing that I finally managed to find on the AF/KL cargo website:
So, 747F pallets be it 118 in. or 96 in. high cubes cannot simply be transferred to a 777F as the shoulder height on the lower (walkway) side is lower by 20,4 in. compared to 747 main deck contoured pallets!
Additionally, for 118 in high loads, the pallet top length on the short side of a 777F contoured pallet must not exceed 48,2 in. according to above drawing while a 747F contoured pallet may measure up to 72 in.