I had a Trooper MkIII years ago that was a beautiful shooter. I kept it until I had the opportunity to trade for a pre-war Winchester 94, curved steel buttplate, 5 digit serial number. I loved the Colt but couldn't pass up that trade. I replaced it with a Colt Trooper MkV that has always been a beautiful shooter. I have kept it in a locked drawer (kids in the house now) and hadn't shot it in probably a couple of years. I had a coyote out after my chickens this morning and grabbed the Colt and nailed him square in the chest. I tried opening the cylinder to take out the spent casing and it won't release. The release knob seems like it might not be pulling back far enough, not really sure. The ejector rod looks like it is out a little too far to clear the housing too. I've never had any trouble at all out of either of my Colts and never taken it apart so I'm a little hesitant to try it with 5 live rounds remaining and without some guidance. Any suggestions you could offer would be greatly appreciated.