  We calculated the magnetic Compton profiles (MCPs) of Ni using density
functional theory supplemented by electronic correlations treated within
dynamical mean-field theory (DMFT). We present comparisons between the
theoretical and experimental MCPs. The theoretical MCPs were calculated using
the KKR method with the perturbative spin-polarized T-matrix fluctuation
exchange approximation DMFT solver, as well as with the full potential linear
augmented planewave method with the numerically exact continuous-time quantum
Monte Carlo DMFT solver. We show that the total magnetic moment decreases with
the intra-atomic Coulomb repulsion $U$, which is also reflected in the
corresponding MCPs. The total magnetic moment obtained in experimental
measurements can be reproduced by intermediate values of $U$. The spectral
function reveals that the minority X$_2$ Fermi surface pocket shrinks and gets
shallower with respect to the density functional theory calculations.
