why do revolvers all seem to hold six rounds? Who or what determined that?

Question

why do revolvers all seem to hold six rounds? Who or what determined that?

In: 6

Answer 1

Because of the way 7 circles nestle together efficiently in a tight hexagon. It is the same reason bees’ honeycombs are hexagonal.:

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The cylinder holds 6 shots and the center axle on which it revolves with a minimum of extra metal or bulk. Adding rounds would increase wasted extra metal and bulk.