Winchester Ammo WSC300WMU Unprimed Cases 300WinMag Rifle Brass 50/Bag
https://www.tandktactical.com/shop/020892632066-winchester-ammo-wsc300wmu-unprimed-cases-300winmag-rifle-brass-50-bag-10129
https://www.tandktactical.com/web/image/product.template/10129/image_1920?unique=2a2df2b
Winchester shellcases are engineered to precise tolerances to ensure smooth-feeding and positive chambering.
