Quote Originally Posted by big honkin jeep
Is It a delay before the firing pin falls? Or a click 1 2 3 Boom? I have had the click 1 2 3 boom with a .300RUM The cause was by going below published minimums when handloading. I put the right amount of powder in the case and all was right with the world.
BHJ
This was kinda what I was thinking. I was mainly thinking primer though. My thought was that if it has enough mechanical energy to ignite the primer then the hang fire would likely be something to do with the ammunition. I don't think the firing pin spring has enough tension to "squeeze" fire the primer. so it's obviously hitting it hard enough to set it off. I've actually crush fired a primer just to see what it would take and it was pretty substantial in term of force. Just my guess though.