Quick Answer
High-Altitude Conditions Impact Arrow Performance: Yes, high-altitude conditions can significantly affect arrow performance. At higher elevations, air density decreases, which leads to increased arrow flight time and potentially reduced accuracy.
Air Density and Flight Time
At 7,000 feet and above, air density is approximately 20% lower than at sea level. This decrease in air density increases arrow flight time by about 10-15%. To compensate, hunters can adjust their shot placement by 1-2 inches to the left and 6-12 inches downrange at distances beyond 100 yards. For instance, at a 400-yard shot at 7,000 feet, the arrow would fly 1.5-2 inches farther.
Penetration and Energy Transfer
Higher air density at lower elevations can also affect arrow penetration. At 7,000 feet, arrows may lose about 5-10% of their kinetic energy due to the thinner air. This decrease in energy can result in reduced penetration, especially in denser targets like elk. To maintain penetration, hunters should aim for the same kinetic energy at higher elevations by using heavier arrows or faster arrow speeds.
Adjusting for Altitude
To adjust for altitude, archers can use a ballistic computer or consult a ballistic chart to determine the optimal arrow speed and weight for their specific environment. For example, at 7,000 feet, a 350-grain arrow may require a 20-30 ft/s increase in speed to maintain the same kinetic energy as at sea level.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.