When you really have a shooter like I have, which I hand load for, How could I get a better barrel

I have no answer for that. if you are satisfied with the rifle/barrel you have, don't change it.

as I had mentioned in my case( another topic) , I had Fred T&T, new bolt, SSS trigger, etc.

I have one scope, stock, trigger, etc. for three barrels ( so three rifles) .

don't get me wrong, three rifles are great also. I'm running out of space in my safe for more rifles. maybe I should just buy a bigger safe, & then I can buy more rifles ;D

in your case, it's sounds like you have a good deal. a present rifle that shoots very good, & you can get a 223 for $340.

can't go wrong with that.