As I understand it, it is only the triple banding of the Barnes that engages with the rifling whereas the Hornaday and Nosler engage along their full length, much like traditional jacketed rounds. No doubt commercial loadings meet with regulated limits on pressures but I have heard a greater degree of caution might be required when experimenting with home loads.
I'm a big fan of Sako's loading of the Barnes and would love to put the Winchester Nosler to the test but have so far failed to find a stockist. If anybody knows of a source in .308, please do let me know.