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Home»Gun Reviews»Shell Shock’s Innovative 7.62 NATO Cartridge Case Passes Rigid Military Test
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Shell Shock’s Innovative 7.62 NATO Cartridge Case Passes Rigid Military Test

Gunner QuinnBy Gunner QuinnJune 1, 2025
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Shell Shock’s Innovative 7.62 NATO Cartridge Case Passes Rigid Military Test
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The Shell Shock Technologies (SST) 7.62×51 mm Nickel-Alloy Shell (NAS3) cartridge cases have successfully completed rigorous testing at the Naval Surface Warfare Center, Crane Division. The final score was zero case failures when subjected to some of the most demanding protocols in the defense sector.

The tested cartridge used a 155-grain bullet, loaded at 50,000 p.s.i. and velocities of 3,000 f.p.s. It was tested under extreme pressure and velocity in belt-fed machine guns, including the 240 Bravo and Minigun platforms. SST’s 7.62×51 mm cases passed with flying colors, even under the violent conditions of automatic fire and harsh ejection cycles. Testing was conducted at ambient temperature, as well as at -40 and +160 degrees Fahrenheit. All pressure and velocity benchmarks were met or exceeded.

“This milestone underscores the durability, consistency and tactical advantages of our NAS3 case technology,” said Peter Foss, managing director and CEO of SST. “Zero case failures in such unforgiving conditions is not just a win for us—it’s a validation for every warfighter and defense partner looking for lighter, faster and more accurate ammunition.”

The 7.62×51 mm success joins a growing list of rifle caliber NAS3 cases, including .300 BLK, 5.56×45 mm and 6.5 Creedmoor. Early results from .338 Lapua testing are also promising. The company is ahead of schedule with initial test samples for the .338 Norma, and tooling is underway for .50 BMG. The 7.62×51 mm will be available to enthusiasts this summer.

SST opened its factory-direct outlet in December 2024. The company also offers .380 ACP and 9 mm Luger pistol cartridges to consumers.

Ammunition using the company’s two-piece NAS3 cartridge cases are lower in weight and offer higher velocity, among other advantages. SST is headquartered in Eubank, Ken., and was established in 2015. The firm’s cartridges are produced at its Calhoun, Ga. facility.

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