Shell Tech™ .308 NAS³ PROGRADE Ballistic Tip ammo is a round engineered specifically to give hunters repeatable accuracy, flat trajectories, and the terminal performance needed on big-game hunts.
Built around SST’s proprietary NAS³ casing technology and the proven Nosler® 150-grain Ballistic Tip projectile, the .308 NAS³ PROGRADE was developed to deliver the real-world performance hunters demand: consistent groupings, dependable expansion, and the down-range energy to finish the job.
NAS³ casing: strength, consistency, and lighter carry weight
Supporting the projectile is SST’s NAS³ casing, which provides ultra-consistent geometry, uniform wall thickness, and precise chamber alignment — all attributes that reduce variation shot-to-shot and tighten groupings. Constructed with a nickel-alloy body and a stainless-steel head, NAS³ casings are stronger than brass, corrosion-resistant, and designed to handle the stresses of demanding field use. They’re also significantly lighter than traditional brass — up to about 30% lighter — meaning hunters can carry more rounds with less fatigue.
The subtle discoloration visible on each NAS³ case neck comes from a controlled heat-annealing process: it improves bullet grip and neck tension and helps deliver more consistent seating and release from shot to shot.
Projectile: designed for controlled expansion and long-range accuracy
At the core of the load is the 150-grain Nosler Ballistic Tip. Its streamlined polymer tip, full-tapered jacket, and specialized lead-alloy core work together to produce controlled expansion, excellent weight retention, and reliable penetration across a broad range of velocities. A heavy jacketed base resists deformation during firing, creating a stable platform that promotes large-diameter mushrooming on impact. The Ballistically Engineered Solid Base® and boat-tail profile further enhance long-range performance and simplify feeding and loading — resulting in consistent terminal behavior and decisive stopping power in hunting scenarios.
Cleaner, eco-minded performance
SST pairs the NAS³ casing with an eco-friendly, lead-reduced design to provide cleaner barrels and less fouling without compromising performance — an important consideration for hunters who want both reliability and reduced environmental impact.
Proven field numbers
Shell Tech .308 NAS³ PROGRADE pushes the 150-grain Ballistic Tip at a listed muzzle velocity of 3,050 feet per second, delivering the flat trajectories and downrange energy suited to elk, deer, and other demanding game. Built for reduced recoil and dependable cycling, the cartridge aims to be a reliable ally from stalking hillsides to long-range shots.
By combining its advanced NAS³ casing with Nosler’s proven Ballistic Tip technology, SST has created a cartridge that gives hunters the confidence they need in the field: accuracy at extended ranges, flat velocity, and the stopping power to make every shot count.”
Specifications
Caliber: .308 WIN / 7.62 × 51 mm
Projectile Weight: 150 grains (Nosler Ballistic Tip)
Muzzle Velocity: 3,050 fps
Design: Ballistic Tip for optimized expansion and long-range accuracy
Casing: NAS³ — nickel-alloy body with stainless-steel head (lightweight, corrosion-resistant)
For hunters seeking a modern, high-performance .308 option that blends advanced materials with a field-proven projectile, the Shell Tech .308 NAS³ PROGRADE offers a compelling combination of precision, penetration, and packable weight.
