OK well I just got off the phone with Mike Thompson and here is the scoop on the range. The range is open to the public Wed 8:00am to 4:00pm and Saturday and Sunday 8:00am to 5:00pm until Daylight saving time at which time the range will close at 4:00pm
He has paper out to 600 yards and steel out to 1000 yards
The rest of the week is closed to the public and you can not rent to range for private groups.
I'm going to have to trek out to Piru and take some photos and chat with Mike in person. Looks like if you want some long distance targets this is a good place to go.