I get to see a lot of ammo shot here. A can full of .22 that doesn't go off. Of all the thousands shot here I have NEVER seen anything with CCI not go bang, never. I have a Folgers coffee can about 2/3 full of centerfire that didn't go off. Almost all of those can be traced to a striker fired gun of some sort. Adding an external hammer to the mix will usually fix the problem. At least that's what we see here. When those hammers go WOP it is followed by a bang.