I had an Husqvarna FN 98 in 8mm Mauser turned into a 9,3X62 by JES, and it worked perfectly. The cost is about 1/2 what a re-barrel would run, and you keep the original barrel and sights.
^^^THIS^^^ IF, that is, the barrel is thick enough. Jess wants a minimum of .100" thickness after the rebore so .566" would actually work, but I agree that would be would be thin. That said I have seen aftermarket CZ 9.3x62 Mauser barrels for sale and they are no thicker than that. I had Jess do a 1903 Springfield original barrel and it feeds just fine with no other mods to the action, so I think the question of "is there more work than just rebarreling [or reboring]?" is no. My Springfield is a genuinely sub-MOA shooter now, but it had a .640 muzzle to begin with. YMMV.
$250-$275 total cost is hard to beat though to take your 30-06 to 9.3x62 - almost worth a try even if it does have a thin barrel - you can always rebarrel later if it doesn't work out.
