when i said used a quality .30-06 barrel for a rebarrel job, i didnt mean that the original barrels were low quality, just stating if youre going through the effort, might as well make sure its not just the cheapest .30-06 barrel you could get, but a decent one
as for the arisaka vs mosin nagant.. i dont have an arisaka, never fired one but i do have my mosin nagant.. the safety does suck, i dont use it, i carry my rifle with an empty chamber instead and the arisaka safety really doesnt sound any worst than the nagant safety.. bullets are literally the same between the two but those rims on the 7.62x54R can make it a pain in the rear to feed from stripper clips and brass cant be made from anything else.. however, it would appear that with the arisaka, atleast new brass could be made from fairly common .30-06 brass.. and i hate the nagants straight comb stock
that all said it sounds like id probably like an arisaka more than my mosin nagant.. however, id still rather have a K98K rifle in its full issued configuration, but it does sound like the arisaka is distinctively better than the nagant