What a 30/06 will do at 300 yards, the 300 WSM .300 Win Mag will do at 400 yards, the .300 Weatherby can do at 500 yards, the .300 Ultra Mag can do at 600, the 30-378 can do at 700. Few can take advatage of the ballistic superiority of the .300 Win Mag much less any of the others. If one wants to shoot at extreme ranges, so be it. No skin off my a##. Not my cup of tea. The 30/06 is enough if you are going to hunt the Lower 48. 30/06 is enough if one is going to hunt Alaska w/o the big bears. Ed Stevenson, a guide in Alaska, stated in this issue of "Successful Hunting" he wants his BROWN BEAR clients to bring their 30/06 loaded with 200 grain partions to hunt with. The hunter would be more likely to make a killing shot. Is there a reason for the 30-378? Yes, to sell more rifles. Can most utilize the 30-378? NO!!!!! I used to shoot silihoutes at 500 meters (re:550 yards). I wouldn't shoot an unwounded game animal at over 300 yards. That's just me.

Dr Fatguy

Elmer Kieth hated smaller calibers. He used a .500 Jeffery for Elephants. WDM Bell used a 7x57 to kill the Big Five in Africa. We're talking a 1000 elephants.