Quick Answer
Bullet drop when shooting running deer is affected by the deer's velocity, distance, bullet type, and angle of elevation. As the deer runs, its velocity increases, resulting in a longer bullet drop. Factors like wind, terrain, and rifle caliber also impact bullet trajectory.
Factors Influencing Bullet Drop
When shooting running deer, the primary factor affecting bullet drop is the deer’s velocity. A running deer can reach speeds of up to 30 miles per hour, which translates to a significant increase in bullet drop. For instance, a 150-grain bullet at 100 yards will drop approximately 15 inches at a velocity of 1,000 feet per second, but at 2,000 feet per second, it will drop around 35 inches. To account for this, hunters should use a ballistic calculator or a rangefinder to estimate the bullet’s trajectory.
Angle of Elevation and Bullet Type
The angle of elevation and bullet type also play a crucial role in bullet drop. A steeper angle of elevation results in a greater bullet drop, and certain bullet types, such as those with a high ballistic coefficient, can maintain their trajectory better than others. For example, a 55-grain 5.56mm bullet will drop more than a 77-grain .308 bullet at the same velocity and distance. Hunters should choose the right bullet type and angle of elevation for the specific shot to minimize bullet drop.
Wind and Terrain Considerations
Wind and terrain can also impact bullet trajectory, making it essential to factor these elements into the shot. A 10-mph crosswind can result in a bullet drop of up to 2 inches at 100 yards, and uneven terrain can cause the bullet to drop or rise unpredictably. Hunters should consider these factors when taking a shot and adjust their aim accordingly. By taking into account the deer’s velocity, angle of elevation, bullet type, wind, and terrain, hunters can increase their chances of a successful shot.
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