I am looking into getting a new rifle (building one really) all im keeping off of it is the action and the barrel. anyways what caliber should i look into. ive got me a 7mm rem mag that i just finished,its my hunting gun. i am looking for a caliber with 1000 yard capabilities. i would like to have something bigger than a 308 so it can buck the wind a little better. (ANYTHING BUT A 300 WIN MAG OR ANOTHER 7MM REM MAG!!!) should i go with a 7mm rum? it seems like quite the caliber. thanks for any input.