yes, QC has been an issue AT TIMES.
I purchased a 700,XCR Tactical in .308 two years ago. The rear pair of scope base holes were drilled off center. I had to use a set of Burris rings (leupold windage adjustable style). With the ring inserts. This barely allowed me to get my scope centered (parrallel)with the bore! My scope has just enough windage adjustment to allow for windage adjustments to about 25MOA.
Its rediculous when a brand new high end Tactical rifle has this kind of problem!!!
My next Remington Rifle was a 700Sendero in 7mmRem Mag. The bolt is not very smooth at all, but the silly thing shoots inside .850" at 100 yards consistantly! (All Reloads mind you).
It seems like its just the luck of the draw.