Winchester Ammo WSC300SU Unprimed Cases 300 Savage Rifle Brass/ 50 Per Bag
https://www.tandktactical.com/shop/020892632868-winchester-ammo-wsc300su-unprimed-cases-300-savage-rifle-brass-50-per-bag-671
https://www.tandktactical.com/web/image/product.template/671/image_1920?unique=219d550
Winchester shellcases are engineered to precise tolerances to ensure smooth-feeding and positive chambering.
