A reminder here in regard to some bullets in some cases "slipping the crimp". Smith and Wesson was the first I recall putting such warnings in their instruction manuals, especially on the guns in the 11 and 12 ounce range. From testing (load 5, shoot 4, then compare the last one to others in the box) we have done at the range and observed over the years, the slippage can happen even with some of the "standard weight" 15 oz. models. The slippage has been usually only slightly visible, but occasionally enough to keep the cylinder from rotating.
However, just yesterday I observed an incident with the semi-new 17 ounce 9mm Ruger LCR and the Federal Aluminum cased 115 grain bullets. A buddy had shot 4 of 5 rounds then proceeded to unload the cylinder by ejecting the moon clip with four empties and 1 live round (which he planned to use in loading up another full moon clip for his wife). The bullet on that 5'th round fell completely out of the aluminum case and all the powder spilled out onto the shooting bench!
However, just yesterday I observed an incident with the semi-new 17 ounce 9mm Ruger LCR and the Federal Aluminum cased 115 grain bullets. A buddy had shot 4 of 5 rounds then proceeded to unload the cylinder by ejecting the moon clip with four empties and 1 live round (which he planned to use in loading up another full moon clip for his wife). The bullet on that 5'th round fell completely out of the aluminum case and all the powder spilled out onto the shooting bench!