Mec will ship additional rings cheap and fast that sounds like the solution. Your Elephant example is a good one. Some brass I form goes through a dozen steps. Good thing is once done it's done.
Two more tips use very little Imperial . Rub some on you fingers and give the case a quick twirl thumb and forefinger. Aneal is easy in a dark shop bucket of water at your feet. Twist the mouth in a propane torch flame let the hot case drop in the water. Lead will keep from overheating the brass, torch you have to watch the case color, still works good.
Bass
