This included the buffer, buffer spring, GI magazines, many aftermarket. 458 SOCOM, the 300 grain Tipped Triple Shock X, also known as the TTSX or TAC-X.Īs noted above, the cartridge was designed to be 100% compatible with the M4 platform. In 2009, Barnes developed a new bullet specifically for use in the. The case length was chosen to be compatible with the Barnes 300-grain X Spitzer bullet. 473" diameter rim is arguably the most common rim size globally (all bolt actions chambered in 7.92×57mm Mauser. The rim size was chosen for compatibility with other platforms, primarily bolt action rifles, as the. 50 AE case would work well in the magazines as well as be the largest diameter case to be able to feed through the barrel extension. The cartridge case design was finalized based on discussions with Tony Rumore at Tromix suggesting a lengthened. 458 diameter, this cemented the choice of caliber. Combined with the wide selection of bullets available in. It was shown as effective in terms of ballistics, firing a 500 grain bullet subsonically, but not ideally suited for its role due to the size and weight of the platform.
458 × 1.5" Barnes had been adopted for use in suppressed bolt action rifles for use in SE Asia during the Vietnam War. Research had indicated that a short belted cartridge called the. 50 AE and not heavy enough for the subsonic suppressed role. 501 diameter, both developed as pistol bullets for the. 499 LWR were ruled out because in 2000 only two bullets were offered in.
#458 socom bullet that performs well at subsonic speed professional
45 Professional was ruled out because in an interview with industry press, the developer of said cartridge stated that steel proprietary to General Motors was used in the bolts and extensions to withstand the high operating pressures. 499 LWR cartridge was still in development phase and had not been chambered commercially. 45 Professional (which has since become the. The cartridges considered were 7.62×39mm M43, 9x39mm Grom. During the developments phase, various other cartridges were considered and proposed to the project sponsor, but rejected as not meeting all the requirements. The project sponsor set forth a number of specific requirements that led to the ultimate design as it stands right now : The cartridge had to fit in the M-4 carbine platform and magazines and be capable of firing heavy-for-caliber projectiles at subsonic velocity using suppressors. 458 SOCOM ammunition in the Tromix shop located in Broken Arrow, Oklahoma on February 16, 2001, at 8:30pm. Tony Rumore fired the very first round of. Marty ter Weeme designed the cartridge in 2000 and Tony Rumore of Tromix was contracted to build the first. 458 SOCOM came about from informal discussion of members of the special operations community, specifically Task Force Ranger's experience that multiple shots were required to neutralize members of the opposing force in Mogadishu during Operation Gothic Serpent.
Inspired by the lack of power offered by the 5.56 NATO cartridge used in the M4 carbine and the M16 rifle, the. 458 SOCOM is a relatively large round designed for a specialized upper receiver that can be mounted on any AR-15 pattern lower receiver.
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