While there is no reason this can't be done, the total cost might be more than selling the Howa and buying a Remington 700 Classic. The Howa is a metric thread and usually costs a little more if you buy aftermarket barrels. The place I talked to about a rebarrel of a Howa wanted about $50 more than for a Mauser or Rem 700. I've got a couple of hackjob Mausers and would kindof like to have a 700 Classic 8mm but I'm not so enamored as to spend that kind of $$ on one. Unless you handload, the 8mm is inferior to the common 30/06 for most uses(disregarding the cheap & possibly dangerous WW2 ammo). If you max out the handloads, it's close to equal.