Three. The most convenient range is the county range and that's the limit.
Usually two rifles and a pistol. And almost always that pistol is NOT my primary defense pistol.
That's because the county range has some absurd rules. Three gun max, one shot every 5 seconds, no rapid fire, no human shaped targets, ie BG's, ect.. When I go to the local private range that's when I bring my primary pistol. And then only my primary as I want focus on proficiency more than engage in a casual target shoot.