Shopping Cart
Your cart is empty.
Browse Categories
Mailing Lists
From time to time we send emails with special offers and restock notification, Keep in touch with Brass World by subscribing to our mailing list. Before we send you emails, we ask that you give your permission by signing up with your email
We appreciate you taking time to confirm your request.Brass World respects your email privacy and will never share your information with a third party.

Secured by PayPal

458 Socom Once fired brass Reloading cartrdge cases,Pin Polished( 50 Ct. bag)

<< Previous in Once Fired Brass Reloading Cartridge Cases Next in Once Fired Brass Reloading Cartridge Cases >>
458 Socom Once Fired Brass
458 Socom Once Fired Brass458 Socom Once Fired Brass Bag
Today's Store Price: $20.00
Today's Internet Special: $19.50
Out of stock
on sale
458 Socom Once fired brass Reloading cartridge cases, Pin polished inside and out. All matching head stamps Reading 458 Socom .Packaged in a Resealable clear window gusseted 50 Pc. Poly bag (Price per 50 Ct)

  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 light45-70but with a much smaller case.

Prompted by the lack of power offered by the 5.56 Nato  cartridge used in the M4 carbine  and theM16 Rife. the .458 SOCOM came about from informal discussion of members of the specia operations command. specifically Task Force Rangers experience that multiple shots were required to incapacitate members of the opposing force in Magadishu during Operations Gothic serpent. Many Somalis would chew the drug Khat  all day an Gothic Serpentd the effects of the drug would both curb their appetite (in a country plagued by famine) and increase their pain tolerance.Marty ter Weeme of Teppo Jutsu and Tony Rumore of Tromix designed the cartridge in 2000 and Tromix was contracted to build the first .458 SOCOM rifle in February 2001.

The project sponsor set forth a number of specific requirements namely that the cartridge had to fit in the M4 Carbine and be capable of firing heavy-for-caliber projectiles at subsonic velocity using suppressors. During the development phase, various other cartridges were considered and proposed to the project sponsor, but rejected as not meeting all the requirements. The cartridges considered were 7.62 X39 mm 9x39mmGrom, .45 Professional (which has since become the 450 Bushmaster) , and 50 A&E Action Express. At the time, the .499 LWR cartridge was still in development phase and had not been chambered commercially.

The .45 Professional was ruled out because, in an interview with industry press, the developer of said cartridge stated that steel proprietary to General Motors Vietnamwas used in the bolts and extractor to withstand the high operating pressures. The .50 AE and .499 LWR were ruled out because in 2000 only two bullets were offered in .501 diameter, both developed as pistol bullets for the .50 AE and not heavy enough for the subsonic suppressed role. Research had indicated that a short belted cartridge called the .458 × 1.5" Barnes had been adopted for use in suppressed bolt-action rifles for use in SE Asia during the Vietnam War. 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. Combined with the wide selection of bullets available in .458 diameter, this cemented the choice of caliber.

The cartridge case design was finalized based on discussions with Tony Rumore at Tromix suggesting a lenghened .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 initial prototype brass still bore the .50 AE head stamp and this has caused some confusion, as the SOCOM case is longer with a narrower rim. The .50 AE rim diameter was reduced from .514 inch to .473 inch for compatibility with other platforms, primarily bolt-action rifles. The .473-inch/12mm-diameter rim was designed in 1888 for the German Commission Rifle chambered in 7.92X57mm Mauser cartridge, and is arguably the most common rim size globally, as all bolt actions chambered in cartridges derived from that shell, such as 30-06Springfield, 308 Winchester and cartridges derived from them, share this rim size. The case length was chosen to be compatible with the Barnes 300-grain X Spitzer  bullet. The final case design has base and rim dimensions identical to thev425 Westley Richards although making .458 SOCOM cases from it is impractical due to the high cost of .425 brass.In 2009, Barnes developed a new bullet specifically for use in the .458 SOCOM, the 300 grain Tipped Triple Shock X, also known as the TTSX or TAC-X.

As noted above, the cartridge was designed to be 100% compatible with the M4 platform. This included the buffer, buffer spring,Nato magazines many aftermarket .223/5.56 magazines, and magazine well. In .223/5.56 caliber, cartridges stack in a staggered (double stack) fashion. However, with the much larger .458 SOCOM, rounds "single stack" without any modification to the standard GI magazine feed lips or follower. A standard 20-round 5.56mm NATO magazine can hold seven .458 SOCOM rounds and a standard 30-round 5.56mm NATO magazine can hold ten .458 SOCOM rounds.

Product Reviews

(0 Ratings, 0 Reviews)

SiteLock Official PayPal Seal
Solution Graphics

We prefer Pay Pal but also accept Money orders & Checks. No account info needed on site
Choose M/O or Check option at order end.