Boresighting is great if you have space to set up for it. However, I shoot at a public range that's a ways away and has limited opening hours. I'm reluctant to do much of anything outdoors with guns at home because I live across from a high school and sighting in a rifle in my back yard could draw unwanted attention. So, I use a laser, which is fast and convenient. I use a Laserlyte, which fits in the muzzle and comes with a set of arbors that fits everything from .22 to .45. It costs under 50 bucks and well worth it. If you sight in with a laser boresighter at close range, you should aim the scope a bit above the laser dot to correct for elevation. This gets me on the paper every time.