Gee how come we haven't been talking about using the .243 on elk? Maybe we can get a few more miles on this. It has good paper ballistics too.
The 308 does have more frontal area than a .280 or 7mm 08, but if I were an elk, I would not want to get hit by either one. My personal inclination would be to go for a larger wound channel on such a large, grand beast.
If I recall right, Brutal is a wildlife biologist who I think works for the feds. Brutal has been a helpful and interesting contributor to the small game and predators forum. (I had questions on cougars etc.) It would be understandable that the job duties may require dispatching critters from time to time. Anyway, BA correct me if I lost track of your profession.
In my Marine Corps days some accused me of being a professional killer. Well, if I was a hit man, then I was underpaid. Everyone has an opinion.