U.S. TACTICAL SUPPLY SNIPER DATA BOOK （美国供应狙击战术数据书）.pdf

U.S. TACTICAL SUPPLY SNIPER DATA BOOK INSTRUCTIONS General: We recommend using colored pens for most record keeping. Colored pens will allow the shooter to clarify and emphasize important information, while retaining permanence. In contrast, we recommend using a pencil for the zero summary and moving target charts, because the shooter may find that this data will change as the shooter obtains more data. The shooter using the loose-leaf version of the data book should elect to leave completed data pages at home in a separate notebook to protect these pages. For future updates on the data book, visit: . Section: Zero Summary Chart Purpose: To allow the shooter to track elevation deviations because of changes in temperature. Description: The zero summary chart lists target ranges in the left column and temperature variations across the top of the sheet in either Fahrenheit or Celsius. Procedure: 1. Check either the Yard or the Meter box to indicate system being used. 2. Indicate ammunition type in the space provided. For maximum efficiency use one sheet for each weapon/ammunition combination. 4 sheets are provided. 3. Once the shooter has obtained the point of aim/point of impact at a given distance, note the elevation setting in the boxes corresponding to temperature and distance. (Use a pencil, to correct data as necessary.) 4. The shooter can extrapolate data for unfired temperature/distance conditions that have not been fired by noticing trends in your chart. 5. The shooter either should mark cold bore zeroes with a red pencil or should designate a separate zero summary chart for cold bore zeroes. Section: Cold Bore Data and Remarks Purpose: To al