Dream of

I keep having a dream that i am in this house i am not sure whose it is and there are two windows looking out on the pourch and there is this man in all black that walks into the house you can see from the window him walking in and after he walks in i notice that i sleep with a loaded gun and im not startled or surprised when he enters my house. my next impulse is to shoot him. i load multiple rounds into him but he never seems to die he just keeps walking facing straight