RE: Hunting in Southern California...
mike,
Welcome to HuntingNet
you might want to post your question in the "west" (regional) forum. Somebody there should be able to help with your question.
In the early 70's while stationed out in S. Cal I hunted a place called "Cleg Horn" Mountain. About 20 miles+ - from Victorville/Apple Valley.
In 4 yrs I took 3 decent bucks(had to be fork horn or better)
Back then the place was full of deer and places where few men had ever walked! God knows what it looks like now with all the developement in 30 + yrs?
Good Luck