Quick Answer
Varying terrains can significantly impact bullet performance on elk, particularly when using the 6.5 Creedmoor caliber. In mountainous or hilly terrain, bullets may experience increased drag and penetration loss due to the varying air densities and angles. This can affect their expansion and accuracy.
Effect of Elevation on Bullet Performance
When hunting at high elevations, the thinner air can cause bullets to lose velocity and penetration. In the 6.5 Creedmoor, this can result in a 10-20% loss of velocity and 10-20% less penetration at 7,000 feet compared to sea level. To mitigate this, hunters can increase their powder charge or use a heavier bullet to maintain sufficient kinetic energy.
Impact of Wind on Bullet Trajectory
Wind can significantly affect the trajectory of a bullet, particularly in open terrain. In the 6.5 Creedmoor, a 10 mph crosswind can result in a 2-3 MOA shift in bullet impact at 400 yards. Hunters can use wind-resistant bullets, such as those with a higher BC (ballistic coefficient), to minimize this effect.
Terrain-Specific Bullet Choices
When hunting in dense forests or canyons, hunters may prefer heavier bullets that can maintain penetration through obstacles. A 140-grain bullet, such as the Hornady ELD-X, may be a good choice for these scenarios, as it can maintain 90% of its original velocity at 400 yards and expand to 1.2 inches. In contrast, a 120-grain bullet may be better suited for open terrain, where accuracy and wind resistance are more critical.
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