Winchester Rifle Brass Winchester Unprimed 50/Pack. This feature allows the cases to hold as much powder as possible which improves the way the round expands.Reloaders can ensure that their ammunition performs at its highest potential by reloading only fresh unprimed Winchester Brass Cartridge Cases. The consistent reloading ability of these casings make them a favorite among passionate reloaders. These Winchester Brass Cases are the property cases of a small family of Winchester companies that are primarily produced in the small batch method. Customers can be confident in the quality of these Winchester Brass Cases because they are backed by the world famous Winchester company itself. Specifications for Winchester .32-20 Winchester Unprimed Rifle Brass: Manufacturer: Winchester Caliber: .32-20 Winchester Primed: No Brass Quantity: 50 Piece Cartridge Case Material: Brass Package Contents: Winchester Unprimed Rifle Shellcases 32-20 Winchester Winchester WSC3220U: Rifle Brass .32-20 Winchester Unprimed 50/Pack