In order to get a sense of the performance for larger systems, we have applied the RLCI algorithm to larger systems of hydrogen rings with a STO-6G basis. These hydrogen rings have been investigated recently in order to explore the ability of several methods to compress the wave function in strongly correlated materials. In order to apply the RLCI method to these larger systems, we have implemented the RLCI algorithm in the Chronus Quantum electronic structure program, with efficient determinant manipulation based on Ref. 53.