回复：如何算合法用枪自卫？

There is another potential burden you have to prepare if you used weapon at home, you have to show that the intruder get into your home without your consent. He may say that he went your home to borrow something and you let him in, and ther e was an arguement which caused the incident. In the case, you are not qualified to claim the legatimacy of using weapon against intruder in your home.