How Do Environmental Conditions Affect Ammo Performance When Hunting?

Environmental Factors Affecting Ammo Performance

Weather conditions such as temperature and humidity can drastically alter the performance of factory and handloaded ammunition. For example, in extremely cold temperatures, the lubricating properties of factory ammunition may become less effective, leading to increased friction and potential jamming. Conversely, in humid environments, handloaded ammunition may be more susceptible to moisture-related issues, such as rust and corrosion, due to the lack of a protective coating.

Temperature-Related Performance Changes

Temperature fluctuations can also affect the expansion and penetration of bullets. In general, as temperature increases, bullet expansion decreases, while penetration increases. For instance, a .308 Winchester bullet may expand by 20% at 70°F, but only 10% at 100°F. This is due to the decreased density of the bullet at higher temperatures, which can result in a less effective expansion and deeper penetration.

Managing Environmental Conditions for Optimal Ammo Performance

To minimize the impact of environmental conditions on ammo performance, hunters can use a variety of techniques. For factory ammunition, choosing a load specifically designed for the anticipated temperature range can help mitigate performance issues. For handloaded ammunition, using a protective coating or applying a rust-inhibiting agent can help prevent moisture-related problems. Additionally, hunters can use temperature-compensating tools, such as a thermal range finder, to better understand the temperature conditions and adjust their shooting strategy accordingly.