.375 Mercenary

Monday, October 21st, 2019

.375 Mercenary

The .375 Mercenary was designed by Pro Martusheff in 2013 and finalized in August of 2014. Originally formed from the .585 Nyati Express the first production run of the .375 Mercenary was manufacture by Bertram of Australia. Early test results proved Pro’s concept of being able to propel a 352 grain CEB MTAC bullet at over 3400 fps form a 32” barrel.

Pro commissioned RCC to enhance the case design while maintaining the useable 165 H2O grain capacity. RCC manufactures cartridges on CNC lathes and mills out of solid C260 bar stock. Our brass is hammer forged to a tight molecular grain structure and a high tensile strength. While we anneal the neck of the cartridge, the case head is never annealed, and it maintains the structural integrity that is hammer forged into our brass.

Roberson Cartridge Company is a custom manufacture of Vintage, Obsolete, Hard to Find and Wildcat calibers.

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