My 8" Nickel Python Target has been a safe queen pretty much since I purchased it. I take it out to show it off occasionally, but have not shot it. I just have others that I shoot. When I took it out last I noticed that the cylinder latch was jammed and I could not open the cylinder. I can turn the cylinder, pull the hammer back, and pull the trigger to release the hammer. I just cannot open the cylinder. I have opened the cylinder before as I have photos of the serial number for records. I don't really know what happened as I don't pull it out and look at it too often much less abuse it. Does anyone have any ideas on this? Is there an easy fix for it, do I need a gunsmith or does it need to go to Colt? . I have minimal experience taking revolvers apart, but I am willing to try if its not too complicated. Thanks for any feedback.