Re: Help with accuracy.
I would look at the weight diff. You stated that you were effective with the Rem Sendero in the same caliber. Now you have a lighter rifle and you are having accuracy issues? Some people would say that this is hog wash. But think about it. The recoil increases since there is less weight to absorb the recoil. Trigger control or the lack of will be magnified due to the drop in weight.
To check the trigger control, have a buddy place a dime on the end of the barrel while you are down on the rifle, then pull the trigger. The dime should not move if there is good control of the trigger.
The lighter the gun is the more the gun will magnify shooter form and/or fundementals.