The easiest way to bore sight a rifle is set it up on either a bipod or a cradle on a table. Take the bolt out and pick out an object across the room if you're doing this at home. For example I lined up on a refrigerator magnet on our fridge, then adjust the scope to get the crosshairs to line up. Even at short distances you should be able to get them to line up. then when I get to the range I will repeat the process on a target at 25 yards to adjust the elevation, the windage should still be right on. Works every time on rifles that my bore sighter doesn't have an arbor that fits it.