Quick Answer
Reloading with old powders can be unreliable, inconsistent, and potentially hazardous due to degradation over time, which affects burn rates and pressure levels. This can lead to reduced accuracy, decreased performance, and increased risk of catastrophic failures. Replacing old powders ensures consistent and safe ammunition.
Unreliable Performance
Old powders degrade over time, breaking down into inconsistent compounds that affect their burn rates and pressure levels. This can result in reduced accuracy and decreased performance, especially in high-pressure cartridges. For example, a 300-grain 30-06 Springfield round loaded with a 50-year-old powder may not reach its maximum potential velocity, resulting in less effective hunting performance.
Increased Risk of Catastrophic Failures
Old powders can also lead to increased risk of catastrophic failures, such as barrel blowouts or case ruptures. This is due to the buildup of inconsistent compounds that can cause pressure spikes during firing. To avoid this, reloaders should carefully check the expiration dates of their powders and replace them with fresh supplies. A general rule of thumb is to replace powders every 5-10 years, depending on storage conditions and handling.
Safe Reloaders’ Techniques
To ensure consistent and safe reloading, hunters should follow established guidelines and best practices. This includes storing old powders in a cool, dry environment, away from direct sunlight and moisture. Regular cleaning and inspection of reloading equipment and supplies are also essential. Additionally, reloaders should consult the manufacturer’s recommendations for powder storage and handling.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.