How can penetrating oil affect ammunition primers?

Penetrating oil can indeed render ammunition primers inert, which is significant for safety. Primers are sensitive components that initiate the firing sequence of a round when struck by a firing pin. However, when penetrating oil comes into contact with primers, it can seep into the material and potentially cause them to lose their sensitivity and reliability. This loss of sensitivity means that they may not ignite the powder charge effectively or at all, which can be dangerous if a user assumes that compromised ammunition is still functional.

While some might think that applying oil might enhance performance in various ways, the reality is that lubricants like penetrating oil can interfere with the chemical process that makes primers ignite. Thus, understanding how keeping equipment free of such contaminants is vital for maintaining the potency and functionality of ammunition is crucial for anyone involved in handling firearms and ammunition safely.