After enough rounds (maybe hundreds, probably thousands) you might get a barrel hood to look like that if it and the slide are at the opposite ends of their tolerance ranges. But NO manufacturer is going to "test" a gun to that extent and then try to sell it as new.

I wonder how dirty the insides of the action are - two or three test rounds should leave a little bit of powder residue down in the mag well and around the trigger parts of an otherwise brand new gun, but not much. The brass stripe in the middle of the slide (I forget what that ridge is called) looks like the remains of a LOT of shooting, too.

In any event, based just on the pictures, it looks like somebody pulled a swap on the barrel, and maybe the slide as well. I'd certainly take it back and get a new one (if there is one available.) If you can't find a new one, then at least get a BIG adjustment on this one as a (well) used gun.