There is no law - ANYWHERE - that allows you to shoot someone.
Castle doctrine means that if you do have a righteous shot on someone you can prove has a reasonable ability to harm you or someone else that you will stay home, with your guns, until your court case.
Otherwise you would instantly be arrested, have your guns taken, and require bail to be out of jail before your court date.
I repeat, and you must listen to me, there is NO law that allows anyone to kill another. Period.
Example: Tom is sleeping in the backseat of his parked car in a rough neighborhood in Henderson. Suddenly he is awoken by a gang member trying to break the windshield. Tom takes his pistol and shoots him, killing him. Here, the castle doctrine applies because he was in a vehicle. Therefore, he was legally permitted to use deadly force against any intruder, even if he did not fear for his life.
“...there is NO law that allows anyone to kill another. Period....”
Maybe not per se but the justifiable use of deadly force in defense of self or others is tantamount.