ORIGINAL: Russ otten Another problem that can affect primers is gun oil. I/ve heard that this can be a bigger problem than moisture. I try to keep my primers away from either moisture and oils. Watch where you spray that Aerosal can. Russ
The ONLY problem I ever had with primers failing to fire was due to oil! Once I figured out a way to install new primers without touching them with my hands, this never happened again.
I once had an acqaintance who had a problem with misfires with some ammo he had loaded with my tools. It turned out that he had omitted the powder charge from some of them! The bullet bases were very black!! But they were still in the case! Good thing he had good neck tension, thus preventing a stuck bullet in the bore, because SOME of his loads DID have powder....