We have had this discussion before. When asked on this forum why people carry firearms even tough the chance of ever needing to use it are very slim. The standard answer is just in case. So i don't understand why when asked do they carry extra ammo some responses are 2 or 3 shots should be enough. What happened to just in case. PS You will never here someone complaining that they had to much ammo at a gun fight. But they won't be happy if they haven't enough if they survive.
7-8 rounds is fine for carry. If you are going to be somewhere where you think you may be attacked by a mob, then you really need an AK, not a pistol.
Eight rounds can go very quickly. You don't need to be attacked by a mob.