.255 Jeffery Rook cartridge and headstamp
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This file was derived from: <a href="//commons.wikimedia.org/wiki/File:255_Jeffery_Rook_cartridge_vertical.jpg" title="File:255 Jeffery Rook cartridge vertical.jpg">255 Jeffery Rook cartridge vertical.jpg</a>: <a href="//commons.wikimedia.org/wiki/File:255_Jeffery_Rook_cartridge_vertical.jpg" class="image"><img alt="255 Jeffery Rook cartridge vertical.jpg" src="https://upload.wikimedia.org/wikipedia/commons/7/7a/255_Jeffery_Rook_cartridge_vertical.jpg" decoding="async" width="200" height="500" data-file-width="200" data-file-height="500"></a><br>