These are loaded antique Winchester brass shotgun shells in 12

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An old Winchester brass and loaded copper shot shell case are both 12 gauge. - Antique Mystique

Winchester Double X Turkey Ammunition - 12 Gauge - 3 1/2 - #6 Lead Shot - 10 Rounds

Shot Shells

Winchester Limited Edition WWII Ammo 12 Ga 2-3/4 M19 Brass Hull 00

Age of brass shell? : r/Shotguns

WInchester AA compression formed hullsreally low brass

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Blank Blue High Brass Shotgun Shells Empty 12 Gauge Blank Hulls No

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Antique Brass Drawer Pull Knob for Household Decor with Brass 12 gauge Shotgun Shell Accent / Scarlett Sage Design