Just a couple of things to check 1, that the front scope base screw is not too long it may be bottoming out on the barrel threads. 2 that the magazine box has some up & down play when the action screws are tight, if it is tight it may be affecting the bedding, the rifle should group irregardless of the heavy trigger, change the scope, shoot it off bags not lead sled, if all else fails bore scope the barrel , there is no rifle that can not be fixed with a new bbl weather it is worth the cost is up to you, a mod 70 is a nice rifle a 24-25 inch 1-9 twist Douglas , Shillen, or Pac nor should fix it.