I read a recent article on John Carpenter's The Thing. One of the key points was that the 'hero' wasn't supposed to be a hero until things went really wrong, more like a reluctant hero than the obvious protagonist we usually get in action movies and horror movies. This was pretty early in Kurt Russel's career, but after Escape From New York. After it's horrible reception, terrible reviews, and lackluster box office success (in the 80's it was regarded as the worst movie of the decade), most didn't really look into things like this. Yes, it does look a little like Kurt can't handle a gun (surprisingly, a lot of movie actors in the Action genre are rather bad with guns!) but he merely cocks the hammer back to emphasize the point. Besides, cocking the hammer back on a revolver means that very little pressure is needed to pull the trigger (I'm talking lifting a cotton ball kind of force, not a noticeable pull/squeeze). It could be that Kurt actually did accidentally pull the trigger on the 1.2 lb/in^2 trigger and it wasn't edited correctly.