Calculating a precise firing solution at extreme long ranges can be very difficult. Rex's 3rd generation version of these ballistic calculation forms are designed to be much more intuitive and much more user friendly than other systems that employ the use of poorly understood and difficult to perceive ballistic constants. In this video, Rex will walk you through the how to use your CALC FORM to adjust your fire for the following ballistic effects: 1. Bullet drop 2. Barometric Pressure 3. Muzzle Velocity Variation 4. Ambient Air Temperature 5. Vertical Coriolis Effect 6. Humidity 7. Wind Drift 8. Spin Drift 9. Horizontal Coriolis Drift 10. Moving Target / Lead Ballistic CALC-FORM excel link: https://drive.google.com/file/d/0Bzvx3RuRX1QTcHZDN2lQYWduZ2c/edit?usp=sharing Follow these instructions for successful download: Follow the above web address or hyperlink --- "Download the Current Version" (by clicking the button showing a down pointing arrow) --- click "OPEN" on the popup menu --- click "Enable Editing" to use the sheets Once you have the docs, be sure to save a master copy. There are a number of tabs on the bottom. These tabs include several CALC FORM configurations based on your optical sight configuration. Be sure to select the most appropriate forms for you scope set up. Also included are different PRIMARY FUNCTIONS and SECONDARY FUNCTIONS templates for different optical configurations. The last tab contains a Muzzle Velocity Variation Curve Generator which is very easy to use. If you have not yet confirmed you MVs at various ammunition temperature ranges, you can use this MVV Curve generator to get a ballpark idea of what MV trends you can expect at different ammo temperatures. Please feel free to modify and customize these forms as needed for your applications. Calculating a precise firing solution at extreme long ranges can be very difficult. Rex's 3rd generation version of these ballis