Well sounds like you've done some research. Since your sure it's not an Luis Wildlife Area, it has to be the the gun ranges west of the city of SLO. I believe the land is owned by the CDFG and is used to operate a couple shooting facilities. The area also provides some wildlife habitat, but hunting there is not permited, at least none that I know of. Not to mention, if you could hunt there it would be ground squirels and doves only. The area is very wide open with little to no cover. You find out something differnet let me know.