Know your state laws. When I lived in Maryland, I could use deadly force to protect my property.
Now I live in Virginia, and I can use deadly force only if I fear death or grievous injury to myself or others. If I shoot a thief, I will go to prison.
North Carolina is the same.
A burglar in your house is not by itself justification to use deadly force. He must be threatening you or loved one.
As the police told me, "if you shoot em outside your door, make sure to drag them inside before calling us."