Last year when we played the F5, we were shooting Angels and all the guns were set at 10bps due to playing other events.
With the change this year to the Empire Axe, I think that 9 of the 11 guns we used were all shooting 15bps as Wingy said. As this was the first event with the new guns we wanted to give them a good try out, but with the extra paint we used, I think that we do need to turn them down to 10bps.
I know that John does not have a "Cap" on the bps, only the chrono limit of 280fps, but I think that teams that are playing other tournies where the limit is 10bps, do not bother to change the gun settings when playing Formula 5's.