We don't have a "castle" law on the books in my state, but we are a fairly Liberterian leaning crowd here, unlike our neighbors to the south in the Kommonwealth of Massachusetts. I think that a burglar, especially if armed with anything, happened to experience a broken leg from a simple hole in the lawn or errant garden tool across the face, no jury up here would find fault with the homeowner, even if said burglar were to contract lead poisoning from entering the home.