I'd recommend watching Active Self Protection online. You'll see some interesting real-world examples. (One of the main lessons for me: don't move to Brazil!)
It would seem that many of the single-attacker situations are resolved within a 5-6 shot capacity...but there are quite a few 2-4 attacker situations as well (particularly robberies and carjackings). Most of those involve multiple shots fired.
Some interesting thoughts from Clint Smith (strong language): https://www.youtube.com/watch?v=H3l6BR4YXKY
It would seem that many of the single-attacker situations are resolved within a 5-6 shot capacity...but there are quite a few 2-4 attacker situations as well (particularly robberies and carjackings). Most of those involve multiple shots fired.
Some interesting thoughts from Clint Smith (strong language): https://www.youtube.com/watch?v=H3l6BR4YXKY