Two superconducting Nb-47wt%Ti composites with island shaped Ti5wt%Nb artificial pinning centers (APC) have been made. The Ti5wt%Nb volume fractions in the composites are 10% and 20% respectively. The bulk flux pinning force curves of the APC NbTi composites at 4.2K have been studied. The results show that as the pin size is reduced Fpmax increases, and moves to higher magnetic fields. The behavior of the bulk flux pinning force curves of the Ti5wt%Nb APC NbTi composites is better than that of Nb APC NbTi composites, in that Fpmax occurs at a higher magnetic field.