Winchester Ammo WSC257PU Unprimed Cases 257Roberts+P Rifle Brass 50/Bag
https://www.tandktactical.com/shop/020892631922-winchester-ammo-wsc257pu-unprimed-cases-257roberts-p-rifle-brass-50-bag-10124
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Winchester shellcases for rifles are engineered to precise tolerances to ensure smooth-feeding and positive chambering.
