4. Primers exposed to water or any organic solvent, such as paint thinner, gasoline, kerosene, oil, grease, etc. may deteriorate, resulting in misfires or poor ignition.
5. Modern sporting ammunition primers will not absorb moisture under normal or even severe conditions of atmospheric humidity. There is no advantage to be gained from air-tight containers. The factory containers in which they are packaged need only normal conditions of storage. They should be kept dry and not exposed to high temperatures (in excess of 150° F). If exposed to wet conditions or high temperatures, they may deteriorate, yielding misfires or poor ignition of the propellant powder.