Barret bors

Optical Ranging System (BORS™)

Operator’s Manual

11/06/08

USE OF THIS MANUAL
Before you handle the Barrett Optical Ranging System (BORS), read this manual in its entirety. It is important that you understand the principles of its operation and installation procedures. Important safety topics and equipment care are also addressed. This manual should remain with the BORS and it should betransferred to subsequent owners. Additional manuals can be ordered from Barrett Firearms Manufacturing or can be downloaded from the company web site.

SAFETY GUIDELINES
WARNING FAILURE TO FOLLOW SAFETY GUIDELINES MAY CAUSE INJURY OR DEATH.

WARRANTY AND SERVICE
Barrett Firearms Manufacturing Inc. (BFMI), warrants that this product was manufactured free of defects in materials andworkmanship. For one year from the date of purchase by the original owner, BFMI agrees to correct any defect for the original purchaser by repair or replacement with the same or comparable model. Technical specifications are subject to change without notice. If you need factory service, whether made under warranty or not, please contact BFMI for instructions on how to have your BORS repaired. BarrettFirearms Manufacturing Inc. P.O. Box 1077 Murfreesboro, TN 37133-1077 615-896-2938 www.barrettrifles.com

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TABLE OF CONTENTS
Use of this manual/warranty Table of contents About the operator’s manual BORS description Kit contents Technical specifications Installing on a riflescope Installing the battery Power the BORS on or off Operator’s screen BORS keypad functions Selecting cartridgeChanging Units Change Setting Cartridge information Point of Impact Zeroing Procedure Ranging with the BORS 1 2 3 4 4-5 5 6-8 9 10-11 12-13 14-15 15 16 17-19 19 20-21 22-23

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About the Operator’s Manual
The BORS manual is organized into 4 main sections: 1. BORS description. This section explains the functions of the BORS and the contents of the kit. The section also outlines the technicalspecifications and memory storage capacity. 2. Installation and mounting. This section describes how to install the BORS unit on Mil-Std 1913 rail and its host rifle telescope. 3. Battery installation and power on/off. This section details battery installation and how to properly turn the BORS power on and off, and describes the information displayed on the “OPERATOR’S SCREEN” 4. Keypad usage and screendisplays. This section describes each button on the keypad and how to use the information on the display screens. This section also explains how to calibrate the unit, “zero” the BORS and scope with live fire, and use the BORS to determine range. Explanation of format and terms used in this manual: WARNING A WARNING DESCRIBES AN ACTION THAT MAY RESULT IN SERIOUS INJURY OR DEATH. Caution A cautiondescribes an action that may result in damage to equipment. Note A note is a recommended operating technique. Text describing a BORS screen display is “CAPITALIZED AND IN QUOTATIONS”.

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Barrett Optical Ranging System (BORS) Description
BORS is a ballistic computer that mounts directly to the rifle telescope. The BORS is coupled to the scope’s elevation adjustment post. Its body serves asthe rear upper scope ring cap. The BORS continuously measures air temperature, barometric pressure, and bore line angle. Given these inputs, it automatically calculates a ballistic solution for a specific user selected cartridge. The user simply adjusts the BORS elevation knob to match the target’s known range with the range displayed on the BORS. This eliminates the need for “counting clicks” astarget ranges change, allowing the shooter to focus on other environmental conditions, and quickly engage multiple targets at varying ranges. The BORS memory is sufficient to hold 100 cartridge tables. Installation can be completed in about the same time as it takes to mount a rifle telescope.

Kit Contents
The BORS kit, figure 2-1, includes the following: One Barrett Optical Ranging System...