  The robustness of translating effective operator constraints to BSM theories
crucially depends on the mass and coupling of BSM particles. This is especially
relevant for hadron colliders where the partonic centre of mass energy is
around the typical energy scales of natural BSM theories. The caveats in
applying the limits are discussed using Z' and G' models, illustrating the
effects for a large class of models. This analysis shows that the applicability
of effective operators mainly depends on the ratio of the transfer energy in
the events and the mass scale of the full theory. Moreover, based on these
results a method is developed to recast existing experimental limits on
four-quark effective operators to the full theory parameter space.
