Planning on driving down to the Atterbury Range either Sat or Sun this weekend for my first time shooting. Are there any particular "unwritten rules" or courtesies I should be aware of? I'm bringing a USP 40c and an XD9sc, do they need to be unloaded? I've only got 2 magazines each, so I feel like a lot of time will be spent reloading... Any tips or advice before I go will be greatly appreciated!