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.458 socom

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.

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Recent contents
  1. T

    Wanting some .458 socom brass.

      1. Want to Buy
      2. Want to Trade For
    • Mesa
    • Arizona
    WTB some 458 socom brass. Buy or trade.
  2. philtbn

    458 Socom brass wanted

      1. For Sale
    • $0
    • Prescott Valley
    • Arizona
    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. Thank you! Phil Prescott Valley AZ. 928-237-0073
  3. P

    .458 Socom AR

    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...
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