Range in FT

Just curious. At what "real range" does everyone see engagements
happening in FT?
What does one inch apporximate out to in kilometers? I wa sthinking this
because
someone estimated KV rg velocity at 3 to 10k a second. That seems Very
low and
ineffective a great distances unless all the engagements are taking
place at very
short range. (I'm sort of used to Starfire where enagements ranges are
measured in
Light seconds which means vast ranges. In those fights it's rare to get
into visual
range).

Los