Hornady 310 Cal 7.62mm 123gr SP

Hornady 310 Cal 7.62mm 123gr SP

The Hornady 310 Cal 7.62mm 123gr SP is a high-performance bullet component crafted for handloaders pursuing controlled expansion, deep penetration, and aerodynamic accuracy in .310-caliber rifles. Weighing 123 gr with a caliber of .310 in (7.62 mm), the 310 Cal 7.62mm 123gr SP features an exposed lead tip and Hornady’s landmark secant ogive profile—renowned for delivering excellent velocity retention and flat trajectories.

Featuring Hornady’s exclusive InterLock® design, the 310 Cal 7.62mm 123gr SP mechanically locks the heavy, one-piece lead core to the jacket via a raised ring. This fusion prevents separation during expansion, ensuring reliable performance and maximum weight retention for deeper penetration and consistent terminal results on big game.

The 310 Cal 7.62mm 123gr SP also includes inner grooves in the jacket that strategically weaken the upper section, allowing for controlled expansion at both close and long ranges. The tapered jacket thickness supports this consistency by ensuring expansion occurs regardless of muzzle velocity, providing the 310 Cal 7.62mm 123gr SP with reliable performance across varied field conditions.

For handloaders requiring crimp retention, the bullet features a cannelure that offers accurate and consistent crimping—further maintaining core-to-jacket integrity during recoil and impact. The 310 Cal 7.62mm 123gr SP stabilizes smoothly in typical twist rates of 1:10 to 1:12 and performs well in bolt-action, lever-action, and single-shot rifles using .310-caliber cases.

Ballistically, the 310 Cal 7.62mm 123gr SP benefits from the efficient secant ogive, providing a flat-shooting trajectory and wind resistance comparable to modern varmint-style bullets. Hunters report sharp, consistent expansion with deep wound channels and ethical terminal performance on game such as deer, hogs, and antelope.

Manufactured at Hornady’s Grand Island, Nebraska facility, the 310 Cal 7.62mm 123gr SP is sold as a bullet component only. Reloaders must pair it with suitable brass, primers, and powder. With precise jacket concentricity, tip geometry, and InterLock® bonding, the 310 Cal 7.62mm 123gr SP offers dependable, accurate, and hard-hitting performance in .310-caliber platforms.