  We continue our studies of infrared (ir) and ultraviolet (uv) regulators of
no-core shell model calculations. We extend our results that an extrapolation
in the ir cutoff with the uv cutoff above the intrinsic uv scale of the
interaction is quite successful, not only for the eigenstates of the
Hamiltonian but also for expectation values of operators considered long range.
The latter results are obtained with Hamiltonians transformed by the similarity
renormalization group (SRG) evolution. On the other hand, a suggested
extrapolation in the uv cutoff when the ir cutoff is below the intrinsic ir
scale is neither robust nor reliable.
