G-town
I do not have any feedback for you on Ruger bbls.The 77's I have dealt with were in the 1970's.The ones I shot,shot well.New ones? I don't know.
If you have your mind made up that is "The" rifle, you might buy it and shoot it before you worry about rebarreling it.
I also suggest a realistic assessment of what accuracy you expect/need.
For a production hunting rifle,I'd expect some to be about 2 MOA+or- at 100 yds,most around 1 1/2 to just over 1 MOA,and the more rare ones sneak under 1 MOA .
At the same time,subtle bedding tuning and tuning ammo can make an improvement.
Buying a $230 bbl,then paying significant $ to your gunsmith may or may not beat the Ruger bbl.Some blueprinting,like squaring the receiver face,may do more good than changing barrels without blueprinting.
The Lilja bbl recommended is a good one,there are others.I have used a few Douglas Premium barrels.They will do all I need in a hunting rifle.In my experience,they are a decent barrel.
I do my own work.If I were going to pay a smith to true my receiver,thread,chamber,and blue a barrel...would I quibble about a $350 bbl vs a $230 bbl??I'd want toup the odds that I would get the tack driver for the extra $120
But,unless I had some real good reason to do otherwise,I'd buy the rifle I had pretty good faith would give me the results I need.