The original post states weapons legal to deal with an attacker in the home not a burglar an atacker. Which to means if you have the right setup security wise not your normal burglar as they will run a mile when the alarm and dog is going nuts. My gun safe sits inside a wardrobe next to the bed and the solid wood door at the bottom of the stairs locks from our side. If an attacker worked his way through all this purely to get to me and my family then and only then would I have a legal right to protect my family with a shotgun. Please bare in mind legally you can only protect human life with a shotgun not property just human life. Although things are changing more towards the victims side.
One last point from me
This discussion is normal times not shtf
All the bull crap about searching in the dark for an intruder with hand weapons etc etc. why risk your life. Come on is it worth it really how can you prep in prison, hospital or 6ft under.
This site is about preparing so prepare, get an alarm, install security. Burglars are not as stupid as some of the people they rob. 99.99% of burglars will run away at the sound of an alarm. Have a look at your property from the boundaries and imagine your a burglar, how would he/she evaluate your house security wise.
I wish I could always put things so clearly in so few words thank you, I have digressed a little in order to try and illustrate both how to tell the difference between break in, break in turning bad/confrontational, and all out attack, lets assume that attack was the trigger for self defence or clear intent of inflicting harm leaving you no choice than to reach for whatever you have in place, and to think about whether what you have in place can be used against you too easily or whether like a long bat in a narrow passageway is not fit for purpose.
On a side note I think we should be talking legal deterrence too so I'll start that subject separately.