Winchester Ammo WSC3840U Unprimed Cases 38-40Win Rifle Brass 50/Bag
https://www.tandktactical.com/shop/020892632141-winchester-ammo-wsc3840u-unprimed-cases-38-40win-rifle-brass-50-bag-10424
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Winchester shellcases are engineered to precise tolerances to ensure smooth-feeding and positive chambering.
