You can quickly and easily boresight your rifle using the .30-06 Springfield Laser Boresighter from Firefield, designed for firearms chambered in .30-06 Springfield. This device is placed in your rifle's chamber just as you would a live round, and projects a visible beam on to a wall or other flat surface. This allows you to move your scope's reticle to the theoretical point of impact, saving you time and hassle at the range by placing you on paper to start. The laser is actuated by tightening the end-cap, and will stay on until loosened again. The boresighter comes in a lightweight carrying pouch, which protects the laser for convenient use in the field. It is compatible with all firearms chambered for the .30-06 Springfield and most cartridges based on it, such as the 25-06, 270 Win, 280 Rem, 8mm-06,338-06 and 35 Whelen.