Sherman Oaks here. This is my favorite spot.
This is a great BLM area for shooting and general grabassery. On the other side of the 247 is a popular rock climbing spot, sawtooth canyon/new jack city, with free camping sites: clean vault toilets, bbq, shaded picnic tables, and tons of metamorphic basalt. Absolutely not OK to shoot here, but we always head down the 4wd road near ^coordinates and shoot at shit. The roads are mostly well-graded and go all over for miles of mojave high desert.
Closest gas and groceries would be all the way in Barstow or Apple valley, but there's a decent bar midway between new jack and barstow, circle x or something like that.
3-4k feet, so pretty cold and the wind can be comically intense in the afternoons and early evenings. Similar weather to Joshua Tree, but more arid.
There are weird 'compounds' in the area that have fired upon climbers that have inadvertently trespassed into the area.
Don't shoot, or otherwise harm the joshua trees. They are a protected species.
Rascalsnakes, cholla, whiskey tangos, and all the other standard Mojave hazards.
As far as I can tell, shooting coyote and jackrabbits are probably ok. You can
Poor cell reception, but you can get a signal sometimes. If you shoot yourself, expect a long ride to the hospital or a medevac.