I've got four rifles with synthetic stocks that don't have them. I've had the stocks off of three of them. Two of those have had their stocks removed several times. All of them have always returned to zero.
I've never seen a quality synthetic that anyone has ever compressed the stock by over tightening the action screws.
That's not to say that some cheaply made synthetics or soft wood stocks can't be so done. I've owned a cheap synthetic that would shift zero after 15-20 rds. simply because the stock compressed. But I doubt that is what is being discussed here. E
