ORIGINAL: KodiakArcher
You can shoot any order you want but only one at each spot; the second shaft to hit a single spot counts as a 0. I used to remember having index marks at the edge of the paper near each spot (so when you pull up with a scope you can find the index mark at the corner of the paper and know which spot you're on) and God forbid that you draw up on your neighbor's target!! I've seen it happen. Just a hazard of shooting 6x and 8x scopes.
Actually I double checked just now and NFAA will allow you shoot as many as you want into a single spot on a 5 spot target, this was a rule change in the 05/06 season.I remember this because last year in Louisville, Dave Cousins was PO'd about a bad line call that knocked him out of the shootoff and ended up shooting his last end like this just for giggles. It was scored as a 25-5x end and all 5 of his fat 2613's were scored as inside out on the X ring.........