REM-UMC 30-06 SPRG
REM = Remington
UMC = Union Metallic Cartridge Company
SPRG = Springfield (Arms Manufacturer)
30-06 = 30 caliber round of 1906
Remington and UMC merged in 1912 and thus REM-UMC shells can date from 1912-1960 according to most cartridge sites.
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