Just bought an 04 Ultramag. I LOVE IT!! Very quiet, incredibly smooth, fast accurate and forgiving. I have a 30 " draw, shooting 5.8 grains per pound, and I get 284 fps.
With only a 26 inch draw, it will be slower. This is only a guesstimate, but I would say probably around 240-250 fps. You didn't give your draw weight, so I am not really sure.
I shoot 70 #.