[JoeSixpack]

I recently seen a video in I wanna say India?, Guy had a revolver, 3 attackers, he hit a couple of them but ran out and then they beat him with sticks.

If it's a 1on1 encounter I think a 5 shot 38 will get you thru it usually.
And I know several instructors who carry as such.

Look no one knows what you'll encounter that's why those of us carry do so in the first place.

However I'd rather have more than I need.
I carry 18+1 +1 reload, and it would be +2 reload if I had room on the belt.
I feel very comfortable with this level.

Having said that regardless of where the rule of 3 came from.
I believe that is the most common scenario, Logically it makes sense but I prefer to have it and not needed it then need it and not have it.