Somewhere on the internet, there is a picture of bullet expansion results that has several makes of bullets at various velocities, showing expansion. Bullets included were Win Power Points, Rem core-lokts, Speer, Hornady, etc. I believe all bullets were of the same caliber ( perhaps .308??), and same weight (180 grain???)- not sure.
I do remember that Win Power Points did very well, with good mushrooming at all tested velocities, without jacket separation.
In short- they scored well.