If the problem was the Accutrigger itself, you wouldn't be getting dimpled primers. The symptoms for Accutrigger issues is usually either the gun going click but not 'bang' and no primer dimples because the trigger is set too light and the shooter isn't pulling straight back, causing the trigger to trip the sear before the safety flag is out of the way, or else the trigger is set too light and the shooter smacks the bolt handle down against the stop/notch, jarring the sear and the shooter finds the safety flag locked up ridgid when they go to pull the trigger.
Neither case usually involves dimpled primers that I know of.