Always point the muzzle in a safe direction.
Keep your finger off the trigger until you are ready
to shoot.
Keep the action open and the gun unloaded until ready
to use.
Know how the gun operates.
Be sure your gun and ammunition are compatible.
Carry only one gauge/caliber of ammunition when
shooting.
Be sure of your target and what's beyond.
Wear eye and ear protection as appropriate.
Don't mix alcohol or drugs with shooting.
Be aware that circumstances my require additional
rules unique to a particular situation.