As I regard the .223 as too light for most big game hunting, your limited to a .308.
The first choice, IMHO, would be an AR-10 with the match trigger. Scope it up, zero it and practice, practice, practice.
The other .308 rifles either have problems with scope mounts or triggers.
DSA may have a good trigger for their rifles (dunno) and it "looks" like they have the scope mount for FALs fixed.
The SA M1A can be had with a good trigger, but I have not had good luck with the scope mounts. I would imagine that the mount offered by Fulton Arms would work well.
Please see the duplicate thread in Art of the Rifle
http://www.thefiringline.com/NonCGI/...ML/003257.html
Giz
[This message has been edited by Rich Lucibella (edited July 22, 2000).]