you will have to shoot the rifle to find out how bad things are or are not. This is best done from a standing rest and to do a good job you will have to do the shooting holding the rifle as close to how you would if hunting and not using the rest. The reason for this is that recoil starts as soon as the primer ignites the powder and the bullet starts to move. Since the centerline of the right barrel is off to the right and the left barrel off to the left of the center line of the rifle here is what happens. With recoil, the right barrel will move up and rotate to the right and the left barrel will do the oppsite. This is why a mechanical rest will not work very well for regulating. You will probably find that acording to a bore siter your barrels after regulating will look as if the will cross a bit. If you need some help feel free to call.