I shoot a Mathtech and it gets 666 fps. It's a custom bow...Part Mathews, part Bowtech, part Hoyt. It plain smokes 'em! Also use them Boron arrows which are made out of old fishing rods. Absolutely accurate out to 125 yards. And at 666 feet per second it really shoots flat. Penetration becomes an issue much past 125 so I try not to take them 150 yard shots.
If I can only break the sound barrier, I won't have anything to worry about. I'll have to keep trying!