224 Weatherby Magnum ,5.56 X 49 mm, 224 Weatherby Varmintmaster
20 factory new Weatherby unprimed 224 Weatherby Magnum brass rifle cases.
HISTORY: The .224 Weatherby Magnum was developed in 1963 by Roy Weatherby. It is a proprietary cartridge with no major firearms manufacturers chambering rifles for it other than Weatherby. Originally called the .224 Weatherby Varmintmaster , renamed the 224 Weatherby Magnum when the Varmintmaster rifle was discontinued in 1994.