RE: .223 or .243
I agree with Canwoodsman, if you can handle the recoil of the 7mm Mag, there is no reason to go so light. IMO a .22 caliber round is not suited for big game- there is just no reason for it. A gun chambered in a 25-06, 7mm-08,270 Win, or .308 Win would be a great choice. A .243 would definetaly work, but I would go with something bigger if possible.