Mikey,
I stand corrected about the 8mm mauser-you are absolutely right about its capabilities in the loadings you mention. I made the performance assumption based on the standard Federal 170 gr hi-shok load, the Rem 170 gr SP core-lokt load, and the Win 170 gr power-point load, none of which have the spank I would like for elk at 200 yards. There are other loads out there at considerably higher velocities as you mention that make the 8mm very formidable on large game out to 300+ yards.
The other caliber was 7.62x39mm, not 7.62x54mm. There is a huge difference in performance between these two calibers. The 7.62x39mm, however, can also be loaded to higher pressures with 150 or 180 grain bullets to produce plenty of thump out to 300 yards. Once again I made the performance assumption based on the standard Fed, Rem, and Win loads.
Thanks for the correction, Mikey. I'll try not to make assumptions like that in the future. I guess a better point would be that if one plans to use milsurp rifles for hunting, they need to be aware that there is a great variance in ammo cost, availability, and performance.