I have had a lot of folks asking recently what is best for a home defense gun and so I decided to start this thread to give an overview in a more organized way. OK, let me start by saying that everyone will have their own opinion as to what is the best choice for a home defense gun and what is the best ammo for whatever guns they can agree on. So I'm not really going to focus on which one is best because that depends largely on personal opinion since the best gun for defense is the one you have when you need it and any gun beats the hell out of a golf club. Instead I'm just going to offer some info for those who have limited experience with firearms on the pros and cons of the various choices. The first thing you have to decide on is what category of fire arm you want, a rifle, a shotgun or a handgun. A rifle has the advantage of having the option of more powerful ammo that can penetrate so that even an intruder with body armor can be taken down and that high capacity semi autos are easiest to find in rifles, the down sides are that that same penetration drastically increases the chances of shooting through an intruder three walls and killing someone else especial if you miss. There is also the size, they are longer and a less maneuverable in close spaces like hall ways and so on, the ammo is also generally more expensive. A shotgun has the advantages of being probably the most affordable, ammo is easy to find and reasonably priced, a shotgun has multiple projectiles that spread as they go out from the barrel and make accuracy less imperative, and that NOTHING has as much stopping power at close range as a shotgun and that most loads of shotgun ammo while delivering maximum energy have minimal penetration so shooting through multiple walls and killing someone unintended is not as likely. On the down side they are a 'long gun' just like a rifle and so are not as maneuverable in close spaces as a handgun, and there is considerable recoil from a shotgun. Handguns have the advantage of size first and foremost. They are easy to maneuver in close spaces, easy to store in places where they are at easy reach if needed and can be easily carried on ones person if desired. On the downside handguns in general have less penetration than a rifle but still plenty for most rounds to pass through multiple walls and still be fatal and deliver far less energy than a shotgun. There is the most basics on deciding what to get and I will add more later.