The Hornady .30 Calibre (.308") 165 Grain Boat Tail Spire Point (BTSP) InterLock reloading bullet (model 3045) is an inert component projectile engineered for medium to large game hunting. Built with Hornady's traditional cup-and-core design, it integrates a mechanical InterLock ring that locks the one-piece lead core to the jacket to limit core-jacket separation upon impact. The secant ogive profile and boat-tail base provide aerodynamic efficiency for handloaded .30-calibre cartridges, while the exposed soft point and internal jacket grooves initiate reliable mushrooming across standard hunting distances.

Key Features

• InterLock Technology: Features a raised internal jacket ring that mechanically embeds into the one-piece lead core, ensuring weight retention and deep penetration.
• Aerodynamic BTSP Profile: Combines a secant ogive and boat-tail base to achieve a 0.435 G1 ballistic coefficient for flatter trajectories and reduced wind drift compared to standard flat-base bullets.
• Controlled Expansion: Utilises an exposed soft lead tip, interior jacket skives, and a progressively tapered jacket wall to facilitate consistent expansion through a broad target weight range.
• Integrated Cannelure: Incorporates an accurate, uniform groove that assists in achieving a consistent case-mouth crimp alongside the internal locking ring.

Specifications

• Calibre / Diameter: .30 Calibre / .308 in (7.82 mm)
• Bullet Weight: 165 grains (approx. 10.69 grams)
• Bullet Type: Boat Tail Spire Point (BTSP)
• Ballistic Coefficient (G1): 0.435
• Sectional Density: 0.248
• Box Quantity: 100 projectiles per box
• Cartridge Compatibility: Reloading component for handloading .30-calibre rifle cases, including .308 Winchester, .30-06 Springfield, .300 Winchester Magnum, and .300 WSM
• Recommended Target Game Weight: 50 lbs to 1,500 lbs (approx. 23 kg to 680 kg)

Who is the Hornady .308 165 Grain BTSP InterLock Bullet for?

• Medium to large game hunters — requires a proven expanding reloading rifle bullet rated for game between 50 lbs and 1,500 lbs, such as fallow deer, red deer, feral pigs, and goats at practical hunting ranges up to 300 to 400 metres.
• Handloaders utilising .30-calibre rifle cartridges — provides a .308 in diameter, 165 grains projectile with a 0.435 G1 ballistic coefficient tailored for balanced velocity and external ballistics in platforms like the .308 Winchester and .30-06 Springfield.

Less suitable for: Hunters operating standard tubular magazine rifles (where sharp spire points present a risk of recoil-induced primer detonation; use flat-nose or specialized elastomer-tipped lever-action bullets instead), shooters engaging targets outside the 50 lbs to 1,500 lbs weight class, or extended long-range hunting beyond 400 to 500 metres, which is better served by ultra-high BC polymer-tipped hunting bullets designed to initiate expansion at lower impact velocities.