Ross only advertises in a couple of magazines to save money to pass on to the customer. I just got a CR331 and it is an awsome bow. Ross bows are everything that Mathews wants their bows to be at a much more reasonable price. My CR331 is rated at 305 IBO, mine is 29" 68lbs and shooting a 358 grain arrow it shoots 290. So at IBO settings Im sure it would shoot at least 305 and be smooth, quiet and vibration free doing it.