I have no qualms with any rifle or any cartridge that anyone wants to shoot, and I am not here to make any claims about short action versus long action.
But first hand experience, and not exceeding any load limits, CFE-223 powder flat moves 120 gr bullets out of the 7-08 case and 150 gr bullets out of the 308 case. CFE-223 does quite well in the wife's 7-08ai and my 308 win.
With 120 gr TTSX bullets in the 7-08ai (24"), it gets over 3200 fps going 1 grain below the Hodgdon listed 7-08 max.
150 gr Interbonds get just under 3000 fps in the 23" barreled 308 win using 51.0 gr powder. In a hurry, and with excellent accuracy.
Maybe this new powder is just optimized for these particular weight bullets in these two cartridges. Appears so to me, that is all.