Can I fire my gun in outdoors?

I drove out of city limit to a desolate gravel road off the main road. Then I fired my handgun practicing some rapid firing (rapid firing is not allowed at the range!!). There was no one around for probably miles and I fired in a safe direction into a small hill on the side of the road that was covered with dirt and gr (didn't shoot into the air or at hard surface). My question is that some people may still hear the shots and report it to the cops, but can I still get into trouble with law under these cirstances? BTW, I live in California! Thank you!