I'm looking to rebarrel a model 700. Looking to have a nice lightweight elk gun that could potentially take elk out to 600 yards or so. Does one of these have any huge advantages over the other? With the 280 I was thinking of lighter recoil with higher BC buillets but the 30-06 has ammo available everywhere and possibly more knockdown power? I will be handloading and am considering the 168gr 7mm and 185 gr 308 VLD's. Thanks for any thoughts.