Lapping a new barrell??

[Lone Star]

I have a few guns with custom barrels and now all about "breaking a barrel in" but I am amazed that I NEVER knew that all barrels weren't factory lapped
I have a couple Douglas Air Gauged barrels and a Hart barrell that I am pretty sure they are lapped before sent to the gunsmiths??

You are confusing custom barrels with factory rifle barrels. Most custom barrels from accuracy barrelsmiths are done (Hart's are all lapped, some Douglas barrels are lapped) but I'm not aware of any of the major gunmakers using lapped barrels. Like Rocky said this is a labor-intensive job and would greatly increase the cost of factory rifle barrels.