I have a rem 700 5R in 308 that never has shot too great and am thinking about having a 6BR or something along those lines done. The stock is a B&C medalist A5 type and it has been inletted for a CDI bottom metal that takes 5 and 10 rd AI 308 mags. What will feed from this mag or am I looking at replacing the whole stock and bottom metal to do this? If I have to replace stock and mag set-up then I might be leanig to a savage12 LRPV, are they GTG? The smith that I plan on having the work done has 6BR and 6Dasher reamers, would either one work in this mag set-up? Also what is involved in making a 6 dasher? Sorry to be a newb and thanks in advance.