Hornady 7.62×39 123gr SST Bullets
Hornady 7.62×39 123gr SST Bullets combine a secant ogive with a polymer tip and InterLock construction. The .310″ bullet weighs 123 grains and has a .295 G1 ballistic coefficient and .183 sectional density. As a result, it offers a useful balance of trajectory, accuracy and controlled expansion for suitable 7.62x39mm hunting applications.
Why Choose Hornady 7.62×39 123gr SST?
The Hornady 7.62×39 123gr SST uses Hornady’s secant-ogive profile to reduce drag and improve aerodynamic efficiency. In addition, the streamlined shape helps retain velocity as range increases. Therefore, it can support a flatter trajectory than a less aerodynamic bullet design. Hornady identifies the SST as having a secant-ogive profile.
For reloaders, the secant-ogive design can also provide useful flexibility when tuning seating depth. In some rifle and load combinations, the profile can be less sensitive to changes in bullet jump. As a result, reloaders may find it easier to tune seating depth for accuracy. Individual rifles still respond differently, so testing remains important.
123gr SST Key Features
- 123 grain bullet weight
- .310″ bullet diameter
- 7.62x39mm cartridge application
- SST polymer tip
- Secant ogive profile
- InterLock ring
- Lead core
- .295 G1 ballistic coefficient
- .183 sectional density
- Streamlined profile
- Reduced aerodynamic drag
- Useful velocity retention
- Flatter trajectory potential
- Controlled expansion
- Hornady item #3142
- 100 bullets per box
Hornady 7.62×39 123gr SST Hunting Performance
The 123gr SST is designed for hunting with the 7.62x39mm cartridge. Furthermore, its .295 G1 BC helps the bullet retain useful velocity as range increases.
At the same time, the polymer tip initiates expansion on impact. The InterLock ring helps keep the core and jacket together during expansion. As a result, the design combines an aerodynamic flight profile with controlled terminal performance.
The 123 grain weight gives the bullet a .183 sectional density. For this reason, it provides a useful balance of bullet weight and sectional density for suitable hunting applications.
Hornady’s published ammunition data also lists a 7.62x39mm 123gr SST load using the same #80784 ammunition product, confirming the intended cartridge application.
However, actual terminal performance depends on impact velocity, range, shot placement, game and the individual rifle and load. Therefore, reloaders should use current published load data and confirm accuracy in their own rifle.
123gr SST Specifications
Product: Hornady 7.62×39 123gr SST Bullets
Manufacturer Item Number: 3142
Cartridge Application: 7.62x39mm
Bullet Diameter: .310″
Bullet Weight: 123gr / 8.0g
Bullet Type: SST
Tip: Polymer
Ogive: Secant
Construction: Lead core with InterLock ring
G1 Ballistic Coefficient: .295
Sectional Density: .183
Primary Application: Hunting
Pack Quantity: 100 bullets
Finally, browse our complete range of Hornady bullets for other calibres and hunting applications.
For detailed manufacturer information, visit the official Hornady website.





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