Looking to convert a rem 700 7 mm rem mag to a 28 nosler, im reading alot about throating your chamber for a specific bullet such as a berger 195, i have an 8 twist bartlein ordered, and would really like to use a datachable box , question is this , is there a happy medium that my rounds will fit in a box magazine and still shoot 175-195 bullets , any info would be greatly appreciated, pulling what little hair i have left out!