What's your addy so I can e-mail you some maps? Or you can search on Calguns as I asked awhile back. There are only a couple of designated shooting areas available. The few places I've checked out are extremely small. You'll have to check with the FS in the morning you plan to shoot to find out shooting hours as they regulate it by fire danger. There used to be some areas down the 18 toward Apple Valley, Hesperia that you could shoot but they closed them off so off roaders could use it instead and they planted endangered plant life.
The past few years, the snowfall has sucked and the only areas with snow have been the slopes where they drain the lake to make it.
However, rumor has it that the army corp of engineers will be dredging the lake to make it deeper and then pumping it full for use as a reservoir. I heard like 2008 or something. This should bring realestate values up. My parents house used to be lake front until the water level dropped. Now I have to walk about 150 yards to get to the water when it used to be up to the grass!