I agree that a .32 mag would be a good choice. My great-grandmother carried one for years. The ammo is harder to find though.
I also like the idea of a Ruger 10/22 like revolvergeek suggested. I believe that they now make a .22 magnum carbine. A bullpup stock (puts the receiver at the end of the gun and moves the trigger farther forward) could be used to shorten it. Some people report problems with the higher capacity magazines though. Other brands make models with tube magazines that hold more rounds.
You may have to make sure that you keep it cocked since the first time you pull back the bolt to chamber a round could be tough for someone whose hands are in bad condition.
I like the idea of a .22 carbine mostly because of the lesser noise produced. The though of having to shoot a 12 guage with #4 shot in a narrow hallway and the possible resulting hearing damage scares the fool out of me.
I also like the idea of a Ruger 10/22 like revolvergeek suggested. I believe that they now make a .22 magnum carbine. A bullpup stock (puts the receiver at the end of the gun and moves the trigger farther forward) could be used to shorten it. Some people report problems with the higher capacity magazines though. Other brands make models with tube magazines that hold more rounds.
You may have to make sure that you keep it cocked since the first time you pull back the bolt to chamber a round could be tough for someone whose hands are in bad condition.
I like the idea of a .22 carbine mostly because of the lesser noise produced. The though of having to shoot a 12 guage with #4 shot in a narrow hallway and the possible resulting hearing damage scares the fool out of me.