I'm speaking from experience! I can not shoot the 500 or the 460 because the problem is me when firing guns with heavy loads(large recoil)! I squeeze the trigger until the gun fires and at that moment I relax my trigger finger. Under the heavy recoil the relaxed finger slaps the trigger. This slight movement of the trigger is enough to unlatch the cylinder and it moves out of battery! To prove this theory, hold your gun so the light can come thru the bottom of the cylinder window. Put slight pressure on the trigger and observe the cylinder latch moving down. You will see how easy it is to unlatch the cylinder. Your advise of lighter loads is good or learn to pull the trigger thru to the trigger stop and then release! It is difficult to break bad habits! I have a 29-3 Silhouette that I have shot thousands of hot loads thru since 1985 but I have learned to handle the trigger!
jcelect