Can environmental conditions impact .308 performance on elk?

Weather Conditions and Ballistic Performance

Extreme weather conditions such as high winds, heavy rain, or intense heat can affect the trajectory of a .308 bullet, making it more challenging to hit your target. For instance, a 150-grain .308 bullet fired at a 45-degree angle in a 25mph crosswind will experience a drift of approximately 17.5 inches at 500 yards. To compensate for this, hunters should consider using ballistics software or consulting a ballistic chart to determine the optimal windage and elevation adjustments.

Altitude and Bullet Expansion

Elevations above 6,000 feet can also impact .308 performance on elk, as the air is thinner at higher altitudes. This can cause a .308 bullet to expand more slowly, potentially resulting in a larger wound channel but also increasing the risk of the bullet passing through the animal. To mitigate this, hunters can use a faster-expanding bullet design or adjust their shot placement to ensure a more reliable kill.

Bullet Weight and Velocity

The weight and velocity of a .308 bullet can also be affected by environmental conditions. For example, a 150-grain .308 bullet fired from a rifle with a muzzle velocity of 2,700 feet per second may not expand consistently in cold temperatures, potentially resulting in a smaller wound channel. To ensure consistent performance, hunters should consider using a heavier bullet weight, such as 168 grains, which can maintain its velocity and expansion characteristics even in cold temperatures.