My experience was with 168 ttsx's out of a 300 weatherby. No idea as to the velocity as i did not have a chrono when I was 15, but they would ring a 10 inch plate consistently at 600. Wanted to shoot one long, because why not. Whitetail does came out at 150 yards, and I let them go out to just under 500 before I plugged one. She ran about 70 yards before she stumbled over and died. Entry wound was maybe 1/2 inch and exit was 2" or so, so I would say there was decent expansion. But again, I do not know velocities of that load. I liked them though. Also it was a behind the shoulder shot, and i am sure it would have been more devastating with a shoulder shot.
