RE: lethal energy
I agree with stubblejumper. The 7 RM would be good for the species you listed. I don't think that ft/lbs figures are really necessary for picking a big game centerfire caliber because the rounds that are most commonly used have plenty of power for the species you listed. It only becomes important when developing a load for a muzzleloader or something where the range is extremely limited. Most centerfire calibers that are used for big game have plenty of power to kill farther than most people can accurately shoot. Also ft/lbs figures can be misleading. As compared to most loads in a sidelock muzzleloader, a .243 has more energy at 200 yds, than the muzzleloader does, but the .243 does not shoot a bullet large enough for the larger species. (thought people have done it!)Other calibers to look at would be .30-06, 280 Rem, or 300 WM. Either of these would suit your needs fine. I shoot a Savage 110 .30-06 and love it.
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