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Another mystery cartridge

802 views 6 replies 4 participants last post by  Glenn Amsberry 
#1 ·
I'v got another unknown cartridge. This one is head stamped REM-UMC 300 MAGNUM. But it doesn't match up to any .300 cartridge that I can find. Here are the dimensions:
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#3 ·
That makes good sense, but I would expect it to be head stamped "300 H & H" like my full sized .300 H & H cases.
 
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