Eddy,

For sure a deer or elk would never know the difference...

I like the old '06 case and if I was building a non mag 338 from scratch would probably consider the 338-06. And I would probably use a std length action instead of a short action if building a 338-284. I got a good deal on this rifle and it shoots. Probably a wash between these two fine rounds. The best one is the one you're shooting at the time...

DF