Does the M2008 short action use the same exterior bolt size for both standard s/a calibers (308WIN) and short magnums, the only difference being the size of the bolt face? I am wondering if you can do a switch barrel for a M2008 from a 308 to a 7mmWSM if you buy a different bolt for the rifle. Are the short action and short magnum actions entirely different, or do they simply have different size bolt faces?