We present an improved method of handling off-shell effects in deep inelastic nuclear scattering. With a firm understanding of the effects of the nuclear wavefunction, including these off-shell corrections as well as binding effects and nucleon-nucleon correlations, we can begin to examine the role of QCD in nuclei through an analysis of the moments of the nuclear inelastic structure function F 2 A . Our analysis is aimed on one side at extracting the Q 2 dependence of the moments of the nucleon structure function by using the recent high x world Iron data and by properly subtracting nuclear effects from the perturbative contribution. On the other side we compare quantitatively the behavior of the extracted moments with a simple O(1/ Q 2) phenomenological form and we determine the mass term for this parametrization.