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2. Barrett Optical Ranging System - Wikipedia

   en.wikipedia.org/wiki/Barrett_Optical_Ranging_System

   It takes data from thousands of tables and accounts for a number of real-time external factors automatically giving the shooter the exact yardage at which a bullet will hit its target. [ 1 ] Since the BORS is mounted directly to the scope and coupled with the elevation knobs, the computer can interact with the scope by simply turning the ...

3. Unertl Optical Company - Wikipedia

   en.wikipedia.org/wiki/Unertl_Optical_Company

   Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1928 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper Carlos Hathcock during the Vietnam War.

4. Ballistic table - Wikipedia

   en.wikipedia.org/wiki/Ballistic_table

   Example of a ballistic table for a given 7.62×51mm NATO load. Bullet drop and wind drift are shown both in mrad and MOA.. A ballistic table or ballistic chart, also known as the data of previous engagements (DOPE) chart, is a reference data chart used in long-range shooting to predict the trajectory of a projectile and compensate for physical effects of gravity and wind drift, in order to ...

5. Iron sights - Wikipedia

   en.wikipedia.org/wiki/Iron_sights

   "Sighting in" is a process in which the sight axis is adjusted to intersect the trajectory of the bullet at a designated distance (typically at 100 yards/meters), in order to produce a pre-determined point of impact (POI) at that distance, known as a "zero". Using that "zero" as a default reference, the point of aim can be readily re-calibrated ...

6. Advanced Combat Optical Gunsight - Wikipedia

   en.wikipedia.org/wiki/Advanced_Combat_Optical...

   The first ACOG model, known as the TA01, was released in 1987. [3] [4] An example was tested on the Stoner 93 in the early 1990s by the Royal Thai Armed Forces. [5]In 1995, United States Special Operations Command selected the 4×32 TA01 as the official scope for the M4 carbine and purchased 12,000 units from Trijicon. [6]

7. Reticle - Wikipedia

   en.wikipedia.org/wiki/Reticle

   Etched "FinnDot" reticle (a regular mil-dot reticle with the addition of 400 m – 1200 m holdover (stadiametric) rangefinding brackets for 1 meter high or 0.5 meter wide targets at 400, 600, 800, 1000 and 1200 m).