My late 80's issue 311291 170RN is my favorite for .30 cal.
I've had great luck with it in a 03-A3, Rem700 in .30-06, M1A, and both a .30-30 lever action Marlin and a top eject Win. 1894.
I'm not smart enough to get all scientific, and split hairs over meplats & such.
But of the 6-7 small-ish Texas white tail deer I've hit with them from 75-100 yards, none ever took another step.
They all passed through, so I don't know how much, or if they expanded.
From looking at the wound channels, if they expanded at all, it wasn't much.