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Use bore or collimator sight-in initially to line up the rifle on a paper target at 25 yards.

  • Bore sighting-in with bolt-action rifles: Remove the bolt, brace the firearm on sandbags, and look directly through the bore. Correct the rifle’s position until you see the bull’s-eye in the center of the bore. Adjust the sights to give you a good sight picture.
  • Collimator sighting-in for rifles without bolt actions: A collimator slips into the muzzle end of the barrel and allows you to adjust the sights much like bore sighting-in.

These techniques alone are not sufficient to sight-in the rifle for hunting and do not guarantee hits on your target. You must make final adjustments by firing the rifle with the same ammunition you plan to use in the field. If you do not hit the paper target at 25 yards, use a larger target or move the target closer until you can hit it to avoid wasting ammunition. Then you can adjust your sights before increasing the distance of your target.