Winchester Unprimed Brass Cases 257 Roberts (50pk) Type_Ammo Boxes Built to slightly different dimensions

Built to slightly different dimensions than regular dies to allow optimum sizing

a combination of the their GMX and FTX bullet technologies

The BoreSnake Bore Cleaner has no exposed metal to damage the rifling or crown of your barrel

Shooting accurately from a vehicle: Gives the shooter better height

Their brass is comprised of 70% copper and 30% zinc and is vertically drawn during the manufacturing process which results in more uniform wall thickness

Winchester Unprimed Brass Cases 257 Roberts (50pk) Type_Ammo Boxes Built to slightly different dimensionsEach and every piece of Winchester brass is made to meet and exceed the most demanding quality control and performance standards in the industry. New, unprimed brass. This is not loaded ammunition. Technical Information Caliber: 257 Roberts Finish: Brass Preparation: Due to the manufacturing process and or shipping, case mouths may not be perfectly round. To ensure a round case mouth, cases must be sized (or have the expander ball of the sizing die