Group 4-6B transition metal carbides, nitrides, and borides possess favorable refractory properties such as high hardness and high melting temperatures, which are useful for advanced armor, cutting tools, and spacecraft thermal protection systems. High entropy transition metal ceramics (TMCs) are single phase, multicomponent materials that have a high degree of configurational entropy on lattice sites, which can result in enhanced thermal and mechanical properties compared to binary TMCs. Physical vapor deposition of thin films through magnetron sputtering provides the ability to kinetically freeze-in atomic arrangements with a high degree of configurational disorder on both cation and anion sites. This opens up the composition space for an investigation into carbo-boro-nitrides. This research investigates the ability to maximize hardness of thin film, high entropy TMCs by inducing local internal strains in the rocksalt crystal structure through the tailoring of chemical composition.