RE: sighting in a scope
The 2 shot method..... make sure your gun is in a mount or something so it will not move. Shoot one at the target... without moving the gun and with the crosshairs on the bulls eye start to dial the scope toward the bullet hole.you should see your cross hairs moving slowly and eventually they will be on the bullet hole shoot one more to be sure it is zero'd in. saves alot of $$$
Good luck