I am not very familiar with this caliber at all, but I was at a local reloading store the other day and he had a table of odd and end stuff (mostly old tarnished brass) cheap. Well there was a cardboard box on the table with 7mm Rem Mag marked on it, upon opening it all the brass inside was stamped .264 Win mag. Is the brass hard to come by? Would this be something worth picking up cheap to try and resell?