The .12 Viper is a Center Fire cartridge with a Bullet Diameter of 0.123 in” (3.12mm) that is primarily used in Rifles. The .12 Viper originated in (UNKNOWN ORIGIN) in (UNKNOWN DATE). The .12 Viper also has a case length of 1.298 in” (32.97mm) and an overall length of (UNKNOWN).
Additional Cartridge Designations: Wildcat Cartridge.
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