Winchester Ammo WSC40SWU Unprimed Cases 40S&W Handgun Brass 100/Bag
https://www.tandktactical.com/shop/020892632325-winchester-ammo-wsc40swu-unprimed-cases-40s-w-handgun-brass-100-bag-10429
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Winchester shellcases are engineered to precise tolerances to ensure smooth-feeding and positive chambering.
