IIRC PO Ackley was not to high on it in his book. I think I remember him saying there were headspce issues and the cartridge was "disappointing"
That's about as much as I've ever read on it until recently. Guys nowadays seem to like it. If I were younger and needed a project I'd rebarrel one of my gross of 30.06's and give it a try. I rather like the idea of 400 gr at 2150fps. That is some serious fire power.
