I had a new shooter ask about AZSA Handguns so I thought I would post my response here as well.
Hand guns may start in a holster if you like but many of the ladies costumes don't lend themselves to holsters so none are required. Most people use a single holstered semi auto pistol , reloading as necessary. Re holstering is NOT allowed, when you finish the handgun string of fire the pistol must be put down pointed in a safe direction on a table or barrel. Semi autos may be open and empty or loaded with the safety engaged. Revolvers only need to be hammer down on an expended round when abandoned.
You may use as many firearms as you would like. The up and coming gamer set up right now appears to be two holstered Browning High Power's, at 13 rounds each I don't recall ever seeing anyone need to reload with this configuration. Those of us (myself included) who use revolver(s) tend to stage several through out the caper and do the "New York Reload" abandoning empty revolvers and picking up another loaded gun whenever need. If you run out of loaded revolvers or chose to use a single revolver you can always reload it as necessary. The fastest revolver reloads tend to be Colt or S & W 1917's with full moon clips. Tables and barrels are provided for shooters who want to stage firearms and / or magazines. Tables must stay where they are but the barrels may be moved around by the shooter depending on where you think you will need your reloads to happen. Keep in mind that firearms must be abandoned so they're not pointing where you will be moving to finish the caper.