guys...there is no ONE NUMBER for swingweight. It is an average, just like static weight and can vary depending on the luck of the draw. If you have a limit or range for your swingweight, best bet is to pay TW the extra $10 for matching service or bring a scale to your local store. Lower static weight will usually correspond with lower swingweight.
In my experience, my actual swingweight numbers are usually 5 to 10 pts higher on a local RDC machine as compared to TW's published numbers. If they say 315, I will usually get around 320-325 on my machine. I think they also measure without overgrip and dampener.
Yonex Ezone AI 100 - Volkl Cyclone or Cyclone Tour at 55 lbs