Can humidity levels affect bullet performance in hunting?

Understanding Ballistic Performance in Humid Conditions

When hunting, it’s essential to consider the effects of humidity on ballistic performance, especially when sighting in at the range. High humidity can cause a bullet to become heavier due to water absorption, altering its aerodynamics and trajectory. This can result in a bullet dropping or veering off target more quickly than expected.

Effects on Trajectory and Accuracy

Research suggests that a 1% change in humidity can result in a 1-2 MOA (minute of angle) change in bullet trajectory. For example, a bullet traveling 1,000 yards (914 meters) at 100% humidity might drop 3-4 inches (76-102 mm) more than expected at 50% humidity. This emphasizes the need for accurate and up-to-date ballistics data when hunting in humid environments. Sighting in at the range should take into account the specific humidity levels and temperature conditions expected on the hunting grounds.

Practical Applications for Hunters

To adapt to changing humidity conditions, hunters can use ballistic software and calculators to adjust their shots accordingly. In particular, the 1000 yard trajectory can be affected greatly, therefore, it is recommended to use specific ballistics data for the conditions you are hunting in. Additionally, hunters can also use compensating techniques, such as adjusting their hold or using a range-finding device, to account for the effects of humidity on bullet trajectory.