At extremely short ranges, this is nonsensical, but mathematically correct. At very short ranges (say, 1 yard), it would require huge angular adjustments in order to get the scope pointed at where the bullet hits. This is the result of the bore being lower than the scope's line of sight. Why is there a huge increase in drop at very short ranges when units are set to MOA or mils? For the most stable and predictable flight, it is best to keep the bullet in the supersonic (black text) region. Red text means the bullet is subsonic, or under Mach 1.0. Yellow text means the bullet has gone transonic, or under Mach 1.2. Why are some rows of the results in yellow or red text? The range interval at which the results are printed in the trajectory table. The maximum range at which the calculation stops. If measured station pressure is available, use that. This is not the same as the barometric pressure reported by the local news, which has been corrected to the equivalent sea level pressure.Īs an alternative to entering pressure, it can be estimated based on altitude. The absolute (station) pressure at the firing site. The temperature of the air in degrees Fahrenheit. The units in which you want the results reported - Minute of Angle (MOA), milliradians (mils), feet, or inches. Strictly speaking, this is at the muzzle, but measuring the actual scope with a ruler should be close enough. The vertical distance between the centerline of the bore and the centerline of your scope. 90 degrees is a left to right wind from the shooter's perspective. The wind speed between the muzzle and the target. The range at which the bullet's path will intersect with your line of sight. You can measure this with a chronograph, or look it up in a reloading manual (feet per second). About the Ballistics Calculator How do I use the ballistics calculator?Įnter a BC and matching drag function, or select a bullet from the library and then enter the following variables:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |