308stillbrass
SCAMMER
I would choose the 30-06. If you handload you'll get a bit more out of a 30-06 and that'll separate it from the 308 a bit more. The difference between the two isn't much, but then again neither is the recoil. For just a bit more recoil you get a little more oomph on the other end, which I prefer as do many other elk hunters.