Shaggy,
If you have access to a gun vise at a range, the best way to get on paper is to clamp the weapon in the vise pointed at a target at 25 yards. Remove the bolt and center the bore on the target as best you can by looking through bore. with it held in that position, use the windage and elevation adjustments to move the crosshairs of the scope to the same point that you have centered the bore on. At that point load a round in the chamber and fire the weapon with the crosshairs still on the aiming point. Now,without moving the weapon, use the windage and elevation to move the crosshairs to the actual point of impact of the bullet. Now you can take the weapon to the 100 yard bench and be reasonably sure you will be on the paper. If you don't have access to a vise, you can do the same thing by sandbagging but it will be trickier to make sure you don't move the weapon around to much when you make your adustments. If you take your time and make your sighting and adjustments carefully, you will be very close at 100 yds and only need a couple of groups to dial it in.