Really? I guess that you've never been in a firefight. I learned a ong time ago to shoot them until they fall and then put three more rounds into them to make sure they don't get back up.
I would have the same technique for anyone entering my home: better to have a dead intruder than a injured suspect who can still shoot/file a subsequent lawsuit/give conflicting testimony.
Just tell the police that you have "PTSD". That'll cover the mail.
VA says I have had PTSD since 1972, also significant loss of hearing.
If I ever have to triple tap some lowlife here in the States I will use that in court.
Please check out the Wilson Combat channel on YouTube and see what Massad Ayoob says about this. He knows as much about this as you do, probably way more. You need to view it.