Universal gun safety rules
Universal Gun Safety Rule #1: Treat all guns as though they are always loaded and always perform a clearance check every time you pick one up.
Universal Gun Safety Rule #2: Never point your gun at anything that you are not willing to destroy!
Universal Gun Safety Rule #3: Keep your finger off the trigger and outside the trigger guard until you are on target and have made the decision to shoot!
Universal Gun Safety Rule #4: Always be sure of your target and beyond!
Source: USCCA