Ammunition is generally considered not very durable when exposed to water and solvents. While modern ammunition is built to withstand some environmental factors, prolonged exposure to water can lead to degradation of the primer, propellant, and casing materials. Water can cause corrosion, which can affect the firearm's performance and reliability. Likewise, solvents, even those designed for cleaning, can have adverse effects on the ammunition, affecting both the propellant and other components.
This highlights the importance of proper storage and handling to ensure ammunition remains functional and safe to use. While some ammunition may have features that enhance its resistance to moisture, the overall consensus is that water and solvents can compromise its integrity, making it less dependable.