When I used to live in California 10 years ago I often went out to the Lucerne Valley Lions Club range ,which is east of the Victorville / Apple Valley area . Shot my first Mosins out there
At the time it was a great range and they have improved it tremendously since I left . Long range , pistol and trap shooting ranges and certain days are for the black powder guys who came in groups . They also had a kitchen where they served burgers and hot dogs , soft drinks etc . Their site is on the internet so check it out if you live in LA or the surrounding area . I highly recommend it !