Ummm, no, I own both a .30-06 AI and a .300 WinMag. I also own larger .30 calibers, and smaller .30 calibers. The .30-06 will not keep up with a .300WM when loaded to the same pressures with the same bullets. Period. If you want to compare apples to apples, then use the same nominal pressure to both...The .300WM (of which I am not even a fan) will stomp the .30-06 Springfield into the dirt. Despite owning them, I dislike both cartridges equally, so there is no bias in my opinion of them...Only facts.