If you are on BLM land, and not violating any state laws regarding distance to dwellings, shooting over roads, etc, then you are fine. I shoot on BLM land all the time. Weekly, actually.

Few points:
Clean up your trash/old targets.
look and LISTEN. if you hear gunshots, use caution.
Make sure you have a backstop thats suitable (hillside)
Make sure that some ATV's or dirtbikes dont come flying over the top of the hill. (look for trails and listen for them)
if you see shells and cases littering the ground, you are in the right spot.

the map isnt going to tell you where to shoot, just the features and boundries of the BLM parcel. In the worst case scenario (which is very highly unlikely), you might get asked to move or leave by a ranger, game warden or cop. In all the years ive been on BLM land, once and only once have i even encountered an 'official' who turned out to be a game warden looking for poachers. Quick chat and he was on his way, no issue.

There is the a shooting range off of S. China Lake Blvd just before you get to 395, or just keep going straight onto Brown road turn left after the long turn and dip, that has a few different gun ranges operated by a few clubs, or just keep going down that road take the first left and you will see a car upside down and a bunch of other targets that have been left by a$$holes. There are way to many to list here, but just pick up after yourself please

Have you tried checking out any one of the following clubs that are in your area for shooting ranges?
There were some places in the Tehachapi Mountains, around Edwards Air Force Base, and in the Lancaster area that have unmarked shooting areas. You might find some places in the Angeles Forest area or near Phelan that have some shooting areas.

Have you tried checking out any one of the following clubs that are in your area for shooting ranges?
There were some places in the Tehachapi Mountains, around Edwards Air Force Base, and in the Lancaster area that have unmarked shooting areas. You might find some places in the Angeles Forest area or near Phelan that have some shooting areas.

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Cheers