You can also try the area west of Indian graves campground.
I was in your shoes a couple of months ago. I have followed the discussion about the Homestead range and I knew it is closed. However as I understood from the discussions at that time, it was only about the gunrange, so I assumed the shotgun range would be still open. WRONG!
I drove there to pattern test some 12ga loads and found the road to the range gated and secured.