I had an similar experience in that THIS time I didn't have to use deadly force. I was alone at home, sitting in kitchen cleaning and oiling different firearms, and this was during the day. I had the old 870 used for HD sitting on table and had just oiled it and reloaded it (mag only) when somebody knocked out 1 of the panes of glass in the back door. All I did was shuck the slide chambering a round while bring muzzle to bear on the back door.
The hand I saw trying to reach the door lock was jerked out so fast he laid his wrist or hand wide open-HAD TO because of all the blood left-not only on door but all the way to the road. By the time it took me to get out the door, there was no one in sight OR anywhere around!
They must have hauled butt to get off the place before I saw them. The deputy and I had a good laugh about it when he responded to my call and saw the whole table full of firearms where I had them out oiling them (with 3 of them loaded as usual-my carry handguns as well as the HD shotgun). I don't know if they were ever caught or not, but he assured me he would be waiting for them to show up at hospital to get sewn up. This happened roughly 14-15 years ago.