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The .458 SOCOM (11.63×40mm) is a moderately large round designed for a specialized upper receiver that can be mounted on any AR-15 pattern lower receiver. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), similar to a light .45-70 but with a much smaller case.
I am looking for once fired (or good condition at least) 458 Socom brass. It costs 55 cents new in bulk, so I would like to stay at 25 to 30 cents per casing.
Prescott Valley AZ.
I have a .458 build that I built for myself but I just bought a truck so I decided to sell unfortunately. Anderson upper with ejection port Sized for .458 cartridge, Anderson lower, has rock river single stage trigger with reduced power springs to make for easier trigger pull. Red accents, have...