Shell Shock Technologies has announced the completion of independent live-fire testing for its .50 BMG NAS3 case, with results confirming velocity and performance advantages over standard brass at standard operating pressures. The .50 BMG NAS3 case was developed to meet the performance and logistics requirements of military and law enforcement end-users, as well as extreme long-range precision shooters. Production is currently underway, and SST expects the .50 BMG NAS3 case to be available for purchase on its website in August 2026.
Testing was conducted by Vairog US, LLC on March 31, 2026, using a 650-grain Ball projectile, WC860 propellant, and a CCI No.35 primer in a 28-inch barrel. At a 265-grain powder charge and 66,770 PSI, the SST NAS3 case produced 3,111 feet per second. For reference, standard brass-cased M33 Ball ammunition typically produces approximately 2,910 FPS. Testing was conducted across nine charge weights ranging from 245 to 285 grains, with zero primer or case failures recorded throughout.
The velocity advantage is a direct function of NAS3 case architecture. The SST .50 BMG case features approximately 13.5 percent greater internal capacity than standard brass, roughly 330 grains of case volume, versus ~290 grains, enabling a meaningfully higher powder charge at equivalent pressures. The result is greater muzzle velocity and downrange energy without exceeding the cartridge's standard pressure envelope.
Weight reduction is equally significant. At approximately 33.7 grams, the SST .50 BMG NAS3 case is roughly 40-percent lighter than a comparable brass case (~54.85 grams). Across 1,000 rounds, that translates to approximately 46 pounds of weight savings, a logistics and mobility benefit with direct operational relevance for military and law enforcement personnel managing load weight in the field. This is also a meaningful advantage for long-range competition and precision shooting disciplines where every equipment decision matters.
The NAS3 case's nickel-stainless steel alloy construction also contributes to cleaner extractions, faster cooling versus brass, and corrosion resistance that supports reliable performance under sustained fire and adverse environmental conditions.
"The .50 BMG has defined long-range precision and overmatch capability for generations. What we've done with the NAS3 case is take that proven platform and fundamentally change what it's capable of delivering. Independent testing confirms what our engineering told us: more velocity, less weight, same pressure envelope. For the military and law enforcement operators and long-range precision shooters who depend on this caliber, that's not an incremental improvement. That's a new baseline," said Peter Foss, Managing Partner and CEO of Shell Shock Technologies.
The .50 BMG NAS3 case is engineered for professional end-users who require every performance advantage the platform can deliver, and for precision shooters pushing the limits of extreme long-range capability.
Keep up with Shell Tech's ammunition at shellshocktechnologies.com.
