I have two NM .357/9mm convertibles, a Flattop and a fullsize Blackhawk.
I shoot 9mm almost exclusively thru these revolvers.
They both shoot extremely well with 9mm, except the Flattop has a way-too-tall front sight. A very tight group, but nowhere near point of aim even with the rear sight adjusted to its extreme. .357 shoots slightly closer to point of aim, but still too far off to make the sights usable. An issue known by Ruger, but they'll be happy to send me the correct sight. Another Monday or Friday gun, where the monkeys at Ruger weren't all that concerned with QC.
WAYNO.