  We consider |\Delta F| = 1 (F = S,C or B) nonleptonic effective hamiltonian
in a renormalization scheme which allows to consistently use fully
anticommuting gamma_5 at any number of loops, but at the leading order in the
Fermi coupling G_F. We calculate two-loop anomalous dimensions and one-loop
matching conditions for the effective operators in this scheme. Finally, we
transform our results to one of the previously used renormalization schemes,
and find agreement with the original calculations.
