I was always taught that anything I need to shoot with a shotgun for self defense will be within 15 yards or the longest hallway in my home.
The latter is virtually certain, in your home.
Outdoors, the former is very probable, but by no means certain.
Last year, a large, excited crowd made a wrong turn and came onto the lawn of a home not far from us and reportedly threatened to burn the house down, a threat which the "protesters" now deny having made. They did threaten news crews with Kalashnikovs nearby days later, however. The mayor had tp\o leave her home.
Should persons with firebombs threaten a residence with arson, the occupants would be lawfully justified in threatening or using deadly force, if necessary, to stop them--immediately before they threw firebombs, and not a moment afterward.
Thye should, of course, stay safely indoors, without exosing themselves to "incoming" missiles from the crowd. That's a no-brainer.
The likelihood of that happening to me would, I think, be miniscule. I do not live near a mayor or other person whom organized criminal operatives who have brought in paid ex-cons want to drive from office.
I did think about it briefly, however.
I would want something with a greater reach than a pistol.
I settled on a 20-ga. shotgun, with less recoil than a 12, and much less ear-damaging sound pressure.
I would use slugs, of course, which can be aimed. I would never even
think about launching an expanding pattern of shot in the direction of houses across the street, or toward a crowd.
The one I had in mind is
still out of stock. I have not acquired one.