  Energy levels, Land\'{e} $g$-factors and radiative lifetimes are reported for
the lowest 182 levels of the 3d$^4$, 3d$^3$4s and 3d$^3$4p configurations of
Fe~V, Co~VI and Ni~VII. Additionally, radiative rates ($A$-values) have been
calculated for the E1, E2 and M1 transitions among these levels. The
calculations have been performed in a quasi-relativistic approach (QR) with a
very large {\em configuration interaction} (CI) wavefunction expansion, which
has been found to be necessary for these ions. Our calculated energies for all
ions are in excellent agreement with the available measurements, for most
levels. Discrepancies among various calculations for the radiative rates of E1
transitions in Fe~V are up to a factor of two for stronger transitions ($f \geq
0.1$), and larger (over an order of magnitude) for weaker ones. The reasons for
these discrepancies have been discussed and mainly are due to the differing
amount of CI and methodologies adopted. However, there are no appreciable
discrepancies in similar data for M1 and E2 transitions, or the $g$-factors for
the levels of Fe~V, the only ion for which comparisons are feasible.
