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| $ 9.75 per Cartridge |
| 458 Winchester Magnum Factory Proof |
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| $ 149.95 per Box of 20 Cartridges |
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| From the now closed Winchester factory in Connecticut, once they are gone, there will be no more, as Winchester is no longer making Dummy or Proof Cartridges. Please see Proof Page (link below) for more information |
| Massive! 458 Winchester Magnum Factory Proof Nickel Plated Brass Case Red/Purple Dyed 510 grain Projectile and "WINCHESTER" Head Stamp |
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