Does gunpowder go bad

Gunpowder can degrade over time, especially if exposed to moisture, heat, or humidity, which can lead to reduced performance or failure to ignite. Properly stored in a cool, dry place, gunpowder can remain effective for many years, but it's generally recommended to use it within a few years of manufacture for optimal reliability. If you notice any unusual changes in appearance or smell, it's best to dispose of it safely.