With the pressure of the firing pin spring already exerting as much pressure as it does, and the pin of a Ruger will be pressing hard against the cartridge's primer, you don't need to do anything more than bump the rifle to hard to potentially set it off. With all due respect, what you are doing is probably the most dangerous thing anyone has posted in the thread. I'd prefer to run chamber hot, rifle cocked, safety off.
Sometimes, the air you 'let in'matters less than the air you 'let out'.
