Found your answer:

Mathews Ultra 2

Axle-Axle Length : 36"
Brace Height: 6 1/8"
Overall Weight: 3.7#
Let Off: 80%
IBO Rated Speed: 320+ fps
AMO rated Speed: 245fps

Low brace height, most likely a longer than stated draw length and yes it was a 320fps+ rated bow.
If the Allegiance had smooth mods those speeds are probably correct at least proportionally.