I haven't chrono'd an 04 Patriot Dually but, my 03 shot 288 with a 375 gr arrow at 29", 57#. Very accurate, with little recoil or vibration. Plenty quiet for hunting, too. The 04s draw a little smoother, but the valley is slightly narrower. Once a person gets used to the Duallys, they are very easy to shoot well. IMO, the 04s shoot even better than the 03s. At least my scores at 3D this summer say so.
BTW, my P40 Dually shoots 311 with a 305 gr arrow at 29", 58#. I'd expect this to be around 295 with my hunting arrows (375 gr).