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In order to optimize parameters for Rutherford cables used in accelerator magnets, a number of cables were fabricated with different keystone angles, packing factors and numbers of strands. The effect of these parameters was measured on Nb3Sn strand performance and deformation for two different RRP designs. High and low field current carrying capabilities and RRR were measured for the extracted strands. To correlate strand deformation with performance, the former was measured for several cables and conditions as a function of the strand location in the cable cross section.