by Apollo » 08 Feb 2014, 7:33 am
As "Chronos" has said, modern day primers are sealed with a coating to protect them against contamination.
There is an extract from one of the reloading manuals floating around the internet, written by a guy I believe that's involved with CCI Primers, describing the aluminium seal that is applied over the primer material during manufacture.
I believe this applies to most manufactures of primers so unless there is a fault with the seal, oil,water or any other contaminate should not affect the primer base material.
I would be very careful doing any of the "old wives tail" stories of killing a primer to render it inert. The primer material is a nitroglycerine based explosive, not like smokeless powder that just burns. Burning primers should by all accounts cause them to explode and during that process could send pieces of metal flying all over the place. Treat them with extreme care out in the open.
Perhaps wash a few with Metho, let them dry and load them in empty cartridge cases and test them in your firearm.
In the past I have soaked primers with various materials like WD40, Oil of various grades, water etc for like a week then test fired them in a firearm. All went off.
However, I would not trust them to ignite a powder charge correctly with the thought of possibly lodging a bullet part the way down the bore.
I would dispose of them correctly by handing them into the local Gun Shop or Police Station.
They are cheap and not worth the risk be it ever so small of a failure and damage to person and/or equipment.