The Hornady .25 Cal .257 117 gr InterLock BTSP (Item Number 2552) is an inert component projectile engineered for handloading .25-calibre centre决 rifle cartridges, including the .25-06 Remington, .257 Roberts, and .257 Weatherby Magnum. Featuring a Boat Tail Spire Point profile with an exposed lead tip, this 117-grain bullet is specifically rated for harvesting medium-sized game weighing between 23 kg and 136 kg (50 to 300 lbs). The traditional cup-and-core construction utilises Hornady's InterLock mechanical ring alongside a tapered jacket to regulate mushrooming and prevent core-jacket separation across standard rifle impact velocities of 1,800 to 3,000+ fps.

Key Features

• InterLock Mechanical Ring: Integrates a raised interior jacket ring that mechanically locks the lead alloy core in place, maintaining high weight retention and deep penetration upon impact.
• Aerodynamic Secant Ogive and Boat Tail: Combines a streamlined secant ogive nose geometry with a tapered boat-tail base to minimise drag, producing a G1 ballistic coefficient of 0.391 for flat trajectories out to standard hunting ranges.
• Controlled Expansion Jacket: Engineered with upper-jacket inner grooves and a progressively tapered wall thickness to initiate reliable, uniform terminal expansion while resisting premature fragmentation at high velocities.
• Integrated Cannelure: Provides a secure point for cartridge case crimping to maintain consistent bullet seating depth and neck tension during cycling.

Specifications

• Brand: Hornady
• Manufacturer Item Number: 2552
• Calibre: .25 Calibre
• Bullet Diameter: 0.257 in (6.53 mm)
• Bullet Weight: 117 grains (7.58 grams)
• Bullet Profile: Boat Tail Spire Point (BTSP) with exposed lead tip and cannelure
• Ballistic Coefficient (G1): 0.391
• Sectional Density: 0.253
• Recommended Twist Rate: 1:10" or faster
• Quantity: 100 projectiles per box

Who is the Hornady .257 117 Grain BTSP InterLock Bullets 100 Pack for?

• Handloaders reloading .25-06 Remington cartridges for medium-sized deer — Delivers a high sectional density of 0.253 combined with a 117-grain weight to ensure deep penetration and controlled terminal expansion on game between 23 kg and 136 kg.
• Hunters pursuing feral goats and pigs with .257 Roberts rifles — Utilises a 0.257-inch diameter boat-tail base with an aerodynamic 0.391 G1 ballistic coefficient to reduce trajectory drop and wind drift across standard hunting distances up to 300 to 400 metres.

Less suitable for: Extreme long-range hunting or precision target shooting beyond 400 metres, where polymer-tipped projectiles with higher ballistic coefficients provide superior wind resistance, nor for dangerous, thick-skinned large game like scrub bulls or water buffalo, which require heavier monolithic solid or copper-alloy bullets to prevent premature expansion.