The chronograph really burst a lot of bubbles on what were previously guesstimated velocities. I know my Pro Chrono did.
This is true. I did shoot some factory Weatherby 300 WBY 165 grain in a 24 inch barrel that clocked 3600 FPS. I don't know how Weatherby loads their factory ammo, but it will clock higher velocities than what most people will handload...
I think Weatherby used C4 in some of their factory loadings..
