Shortly after its introduction, Stewart Edward White took his .30/06, a custom Springfield rifle to Africa. Over a period of several months, he took dozens of game animals weighing up to a ton, with only a few requiring a backup shot. He used the only .30/06 load that was available at the time, a 150 gr FMJ bullet at 2700 fps. A .308 as factory loaded today bests that velocity by 200 fps, and the choice of .30 caliber game bullets we have today can be appropriately matched to game of almost any size and weight. The .308 can be chambered in shorter, lighter, rifles than the .30/06, with no practical difference in performance on game out to 300 yards. Thus its pretty hard to argue against the choice of a .308 as a viable big game cartridge, and handloading only makes it better, due to the greater selection of bullets available to the handloader.