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Range and Trajectory of .223 AR-15 rifle bullets

Gun Tips by Donald K. Burleson

October 2010

Check out AR-15 for great instructions for bore sighting an AR15 assault rifle (and its M16A2 and M4 Carbine cousins).

Pre-sighting AR-15 sights: 

  • Bore sighting for zero at 50 yards should give you a relatively flat trajectory at 200 yards.  This means that the bullet crosses your actual line-of-sight twice, once at 50 yards and again at 200 yards with a 7 inch lift in-between.

  •  Bore sighing at zero at 25 yards should give you a relatively flat trajectory at 300 yards but will be high at 100 and 200 yards.

  •  The US Marines calls their procedure “Battle site Zero”, and they bore sight for zero at 36 yards 
    Battle sight Zero settings (flat trajectory at 300 meters (328 yards)

 Pre-sighting the AR-15 iron sights on the Colt Mark Target

On my Colt AR-15, the “z” mark can be found 2 clicks above the “6/3” setting on the rear sight elevation knob.

You must adjust your rear-sight elevation to this setting and use the small rear sight aperture (small peep).

With this setting, you laser sight the Colt AR-15 rifle to 25 meters (82 yards).

This achieves a flat trajectory at 328 yards (the 300 meter battle sight zero).

Also see my notes on Bolt Action vs. semi-automatic .223 rifles.



Note: The opinions expressed on these pages are the sole opinion of Donald K. Burleson and do not reflect the opinions of Burleson Enterprises Inc. or any of its subsidiaries.

Suggestions?  We are always seeking new tips for the professional at leisure, and any suggestions would be most welcome.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback. 

Copyright � 1996 -  2010 by Donald K Burleson. All rights reserved.