Quick Answer
Weather conditions significantly impact angle shot accuracy due to wind resistance, temperature-induced bullet expansion, and reduced visibility. These factors affect the trajectory of the bullet and the shooter's ability to accurately place the shot.
Understanding Wind Resistance
Wind resistance is a major factor in angle shot accuracy, particularly on downhill shots. A 10-mph crosswind can deflect a bullet’s trajectory by up to 1.5 inches at 100 yards. On a 45-degree downhill slope, a shooter may need to compensate for this deflection by aiming 1-2 inches high and 2-3 inches left or right to compensate for the wind.
Temperature and Bullet Expansion
Temperature changes can affect bullet expansion and accuracy. In hot temperatures, bullets may expand and lose velocity, while in cold temperatures, they may become denser and retain more velocity. On a 30-degree uphill shot, a 10-degree Fahrenheit temperature increase can result in a 2-inch drop in bullet impact at 200 yards.
Visual Aids and Compensation Techniques
To compensate for wind resistance and temperature-induced bullet expansion, shooters can use visual aids such as wind flags or aiming points. For example, on a 45-degree downhill shot, a shooter can place a wind flag at the base of the slope and aim at the bottom of the flag to compensate for wind deflection. Alternatively, a shooter can use a rangefinder and ballistic calculator to determine the correct aiming point, taking into account wind resistance, temperature, and slope angle.
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