When I was "in a place WAY, WAY, down South", I EDC a pair of BHP with 2 extra 13-round mags for each (That is a total of 78 rounds of 9x19 JHP) & NEVER thought that that number was excessive, given the obvious risk of violence from the CRAZY LEFTISTS down there..
(While I was NEVER actually shot at when driving, I knew any number of people who had been fired upon, there. Both my driver & I were "armed to the teeth", including a 6-round Model 870 Riot-gun that was loaded with 00 buck in the floorboard..)
NOTE: MOST of the he so-called "active shooters" in that nation were CRAZIES, who fired randomly (often with FA weapons like AKs) at cars on the highway.