Designed to reflect the look of. Contains 2 Troy oz of. Unique way to expand the variety of products in your silver portfolio. The 2 oz Silver Bullet. 308 Caliber round is a great choice. Not designed for use in actual firearms, the silver bullets available here are designed to look just like the. All 2 oz Silver Bullet. 308 Caliber designs are available to you with dimensions extremely close to those of the actual rounds. Winchester Firearms is one of the oldest firearms companies in the United States. Founded in 1866 by Horace Smith and Daniel Wesson, who would later found Smith & Wesson Revolvers, Winchester traces its roots to 1850s America. The companys first major product was the Winchester Repeating Rifle, the first firearm capable of firing several rounds with a lever action in an era not far removed from musket-and-ball designs.