Quote Originally Posted by Clint45 View Post
I have heard that penetrating oils, such as WD-40, will ruin primers regardless of if it later dries. Can anyone confirm or refute this?

Oh, at the hunter safety class I took as a teenager, the instructor wanted to demonstrate the power of a primed shotgun casing and placed a quarter on top of the muzzle . . . it flew straight up 5 feet and stuck in the ceiling.
Probably not. the basic ingredients of petroleum products are molecularly alkenes, and probably won't react with the more commonly used primer compounds. Read multiple reports of primers working after being hosed with WD-40 and then dried out. Chlorine Bleach, on the other hand will react with most of the commonly used primer compounds and render the compound inert. I soak all my "nice one, dumb-ass" rounds in chlorine bleach before I chuck them.