Can You Keep Ammo in a Hot Car? The Risks and Realities of Extreme Temperatures on Ammunition
Leaving ammunition in a hot car is a risky proposition. While the immediate danger might not be explosive, the long-term effects of extreme heat can significantly degrade ammunition quality and potentially create hazardous conditions. This article explores the potential dangers and provides crucial information on safe ammunition storage practices.
The Effects of Heat on Ammunition
Exposure to high temperatures can have several detrimental effects on ammunition:
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Deterioration of Propellant: The propellant, the chemical compound responsible for pushing the bullet out of the casing, is highly sensitive to heat. Prolonged exposure to high temperatures can cause the propellant to decompose, leading to:
- Reduced Velocity: The bullet will travel at a slower speed, potentially compromising accuracy and effectiveness.
- Increased Pressure: In some cases, decomposition can lead to increased pressure inside the cartridge, increasing the risk of a malfunction or even a catastrophic failure upon firing. This could result in damage to the firearm and serious injury to the shooter.
- Potential for Misfires or Hangfires: Heat-damaged propellant can become unreliable, leading to misfires (the round doesn't fire) or hangfires (a delayed ignition that can be extremely dangerous).
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Case Distortion: The metal casing of the ammunition can expand and warp due to heat. This distortion can interfere with proper chambering in the firearm, potentially causing malfunctions and jams.
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Primer Degradation: The primer, the sensitive component that ignites the propellant, can also be affected by heat. Degradation can make the primer less reliable, leading to misfires.
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Lubricant Breakdown: Lubricants within the cartridge can break down in extreme heat, potentially causing increased friction and contributing to malfunctions.
What Temperature is Too Hot?
There's no single magic number, as the exact temperature at which ammunition starts to degrade depends on factors like the type of ammunition, the duration of exposure, and the specific storage conditions. However, leaving ammunition in a car parked in direct sunlight on a hot day can easily exceed safe temperature limits. Temperatures inside a parked vehicle can quickly soar to well over 100°F (38°C), even on moderately warm days.
Safe Ammunition Storage Practices
Storing ammunition properly is critical for ensuring its functionality and safety. Here are some best practices:
- Cool, Dry Place: Store ammunition in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat. A locked gun safe is the ideal solution.
- Original Packaging: Keep ammunition in its original packaging whenever possible. This helps to maintain the integrity of the cartridges and protect them from environmental factors.
- Avoid Extreme Temperatures: Never store ammunition in places that experience extreme temperature fluctuations. Garages, attics, and basements are often unsuitable.
- Regular Inspection: Periodically inspect your ammunition for any signs of damage or deterioration, such as rust, corrosion, or bulging cases. Dispose of any damaged ammunition safely.
Conclusion
Leaving ammunition in a hot car is a risky practice that can compromise the functionality and safety of your ammunition. The potential for reduced velocity, increased pressure, misfires, and other malfunctions makes it crucial to store your ammunition properly in a cool, dry location. Prioritizing safe storage practices ensures the reliability of your ammunition and prevents potential accidents or injuries. Always prioritize safety when handling firearms and ammunition.
