What is role of trajectory in deer hunting with an AR-15?

Understanding Trajectory in AR-15 Deer Hunting

The trajectory of a bullet fired from an AR-15 rifle is influenced by factors such as the rifle’s sight height, bullet weight, and caliber. For example, using a 1.5-ounce 68-grain bullet at 3,000 feet per second, the bullet will drop approximately 1.5 inches at 100 yards and 6 inches at 200 yards when fired from a rifle with a 2-inch sight height. This means that if you’re aiming directly at the deer’s vitals at 200 yards, the bullet will impact 6 inches below the target.

Measuring and Compensating for Trajectory

To accurately compensate for trajectory, hunters need to know their rifle’s sight height and the ballistic characteristics of their ammunition. Using a rangefinder or a ballistic calculator, hunters can determine the bullet’s drop at various distances and adjust their aim accordingly. For instance, at 200 yards, you would aim 6 inches above the deer’s vitals to compensate for the bullet’s drop.

Practical Techniques for Managing Trajectory

In the field, hunters can use techniques such as mil-dot reticles and ballistic holds to manage trajectory. By using a mil-dot reticle, hunters can estimate the bullet’s drop and adjust their aim accordingly. Additionally, hunters can use ballistic holds, which involve aiming slightly above or below the target to compensate for the bullet’s drop. For example, aiming 2-3 inches above the deer’s vitals at 200 yards can ensure a clean shot.