guys, zero the rifle, then use a plumb line on a target 100 yrds works well, now increase your elevation about 30 MOA (30 inch) and take a shot, the bullet should strike on the line 30 inch high, if its left or right then your scope is not in line with the action and any dialed in elevation would also pull the shot left or right, if off line rotate the scope re zero and start again.
This way once it is correct a shot taken at range will move in line with the action/ elevation on the scope.
Hope it helps Nigel