My son has this revolver and carries it as a defense pistol. It performs flawlessly every time he fires it, thankfully always at the range so far. Did you buy this gun new? I wonder if someone installed lighter main spring, or tampered with the original main spring. I installed a Wolff spring kit in my Taurus M66 and have misfires while shooting double action using Winchester primers and am going to load some ammo using Federal primers but if I continue to have the misfires will have to reinstall the factory main spring. Have you cleaned the action and lubed it? How many rounds has been down the barrel?