Lilja barrels are a joy toown and shoot. So are Hart, Krieger, and a number of others. Some of the less expensive barrels, like Douglas or even a factory Remington, can produce some excellent groups; despite the tool marks and other visual imperfections in the rifling. I personally have a slight preference for Krieger - the cryo freezing adds an element of consistency to the gun's ability to hold zero over a wide range of conditions.

The thing to remember about custom barrels (or any rifle barrel for that matter) is that each one is its own little world. Just because Sam has a Lilja and it doesn't shootSierra bullets very well, doesn't mean yours isn't going to like them - or that Sam's won't shoot Berger bullets into the same hole just because yours won't. And any premium barrel manufacturer occasionally turns out a lemon. Doesn't mean the next one off the line won't be a ringer. Good gunsmithing obviously plays a part in all this; but the individual barrel is the wild card here.