See this is where I would have some issues. Why would I want to have to put my hands on another person? To me that is asking for more trouble and I am now in arms reach. I have no idea if this guy is a navy golden gloves with a crazy right hook. A strong punch can kill just as fast. Self defense tells me to stop the threat not get in to a shoving with some one on my own property. Also you elude that I knew he was unarmed. I did not. I have no idea if there is a knife in his sleeve or a gun in his waste band.
These are good points. But, you're starting to combine things. Lets separate them.
Just so it flows better and makes more sense, lets start with a quick review. Both of the castle-doctrine statutes protect the use of force in certain circumstances. Neither of them protects the threat of force. Thus, the statutes right on their face offer no protection to reaching for your gun. Any gun reacher is now open to whether police or prosecutor wants to cut some slack and expansively interpret the use of not-lethal force to include the threat of force. Get an anti-gun cop or anti-gun prosecutor and its time to start rolling dice. This is more to counter the arguments that castle-doctrine protects you than to prove you need some other handling. I just want you to see that you are not protected by the castle-doctrine. At least as far as I can see on the information available at this point.
Lets take the next point out of order. Lets look at the other guy having an unknown weapon. The law has been at this for millenia. Literally. The law has split the hairs that were split when previous splits were split. The devil is in the details. AOJ doesn't particularly include that an attacker
might be armed. If you don't see a weapon, its not going to factor into what you knew at the time and won't count toward what you reasonably believed. In dozens of books, videos, and write-ups on AOJ that I have viewed, no one said that the possibility the empty-hands attacker might have a weapon counted as justification for lethal force. Nor any court opinions. Now, if the empty-hands guy has one hand in his pocket and verbally hinting at a weapon, its a whole different ball game. But, that's not what we're talking about here. Unless the attacker has size or numbers aka disparity-of-force, it is the weapon that
is the A of AOJ. If you don't see a weapon, or he doesn't verbally refer to having one, and there is no disparity-of-force such as size or numbers, then A is completely missing, and AOJ never gets off the ground.
As to shoving the guy, I am working on the assumption he is so close that a fast forceful shove doesn't require you to move forward. If you have to move forward, then maybe a verbal command to stop is better as the first step. It might be better as the first step anyway, depending on circumstances, because shoving can be viewed as battery, opening the door to a citation. Also, regarding hard, fast shoves, don't forget that if you are shoving, now
you are ahead of
his reaction curve.
You're right about the golden gloves/martial arts. Unfortunately, the self-defense stuff I've learned doesn't let you use that angle unless you know that particular person in front of you has those qualities. I didn't say the law was perfect. In his video Judicious Use of Deadly Force, Mas Ayoob indirectly mentions asking the assailant if he is a martial artist to establish the knowledge about disparity-of-force. You can almost imagine the conversation:
BG: "I'm gonna kick your ass!"
GG: "Oh, no! You'll want to break some bones, too, huh?" (helps establish the grave bodily injury angle)
BG: "Yeah, I'm gonna break your face, too!"
GG: "Oh, no! You probably know karate or something?"
BG: "Yeah, I'm a black belt. Here it comes."
GG: [bang, bang]
But, my point is that unless you know he is a golden gloves or martial arts expert, you're not going to be able to use it. The possibility that he might be isn't going to be allowed as part of what you knew at the time. This is all in reference to using lethal force. I cannot imagine the law is going to allow you to use the threat of lethal force differently.
Also, the guys who are arguing with me are partly right--the cop may be entirely on your side after you explain things. Its not like cops are experts on self-defense law. Keep it in perspective. I'm recommending aquiring some other tools in case the cop that comes is not on your side. And, newly, so you have another reaction you can use in public. Pull that gun reach on an empty-handed antagonist in public, you're gonna want all the witnesses on your side and hope nobody calls the cops. It is just too plainly a threatening or brandishing. And, thus a different reaction is needed.