hi i am just starting looking into shooting. my older borother,who is in the army overin iraq) and i both want to build up a long range rifle. and i have done a little research on it and it looks like the 6ppc round is a pretty good way to go and i was wondering on your guyses thoughts on it? but i am a farly unexperienced shooter, i shoot on the weekends but nothing to serious, and i was wondering what i should be doing and what things i should be looking into if i want to become a serious threat at 600 plus yards?