acy...We are realy splitting some very fine hairs IMHO. However, if I were facing the same, I "think" I may cast my vote for the .338 for it's "shootability" over the others mentioned.
I also feel sure you may get as many different answers as there Gun Owners, as this question borders on the 270 vs 30-06 debate. I don't know that there is a good answer.
Your thoughts on a 400 yd shot is certainly not impossible for many shooters, albeit a "fur piece" for this old goat. I think this may prove an interesting thread to follow. Good luck on your endeavor.
Russ
