When you buy guns online from Firearms World, make sure to pick up snap caps to better safely experiment with your firearms. In this case, the .357 Mag revolver training rounds can easily tell you the feeling of a trigger pull and how a live round feels in the chamber without a one being present in the firearm. With these, you can easily keep your firing pin in good condition while making doubly sure everything in your revolver works. Grab yours from Firearms World today for your home defense gun!