Sounds about right. I hope you didn't buy the Liberty for the "speed" because that's not what the bow was designed for. I've got the Justice and it's easy to draw, accurate and very quiet. I chose the Justice over the Liberty for it's more compact size for tree stands and ground blinds. My Justice is shooting 500 grain arrows at 247 fps at 70/29. 430 grainers go 261 and the 392 grain Easton Fatboys go 271 so I'd say you're very close. Good luck this fall!!!