Winchester Unprimed Brass Cases 257 Roberts (50pk) Type_Ammo Boxes a combination of the their

a combination of the their GMX and FTX bullet technologies

These ions search out and release the copper from the surface of the bore to provide a superior clean surface without copper and powder fouling

CCI-made and primed case

Focus/Parallax:Fixed - 91m / 100yds

Lee Breech Lock Challenger Single Stage Press

Winchester Unprimed Brass Cases 257 Roberts (50pk) Type_Ammo Boxes a combination of the theirEach 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