These 33 Winchester reloadable cases are re-formed from a more readily available caliber therefore they have the parent case headstamp.
33 Winchester Ammo
6GT « Daily Bulletin
7.62×38mmR, Military Wiki
Nosler Unprimed Brass Rifle Cartridge Cases 50/ct 338 Win Mag Brass - Ammo Depot
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33 Winchester Ammo
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Reloading Quick Reference Guide - The Shooter's Log
33 Winchester Reformed Brass Cases*
Winchester Unprimed Brass Rifle Cartridge Cases