I tried 330 days out at midnight for BF tickets this October to HNL for my honeymoon. Nothing. Tried later in the morning and most of the next few days after that. Nothing. On the other hand, had no problem booking FC on AA at the 330 day window; in fact, additional FC award tickets were available on the same flights for several MONTHS after that. UA FC award tickets were also available on the days I wanted, although at less desirable times.

I now reserve my almost 400K CO miles for use on NW (and now DL). I delight in getting the CO rep to tell me nothing is available on CO (the usual response), before I have them check NW.