Hornady's InterLock bullet features a raised ring inside the jacket that is embedded in the bullet's core that keeps the core and jacket locked together during expansion to retain mass and energy. The tapered jacket thickness is precisely controlled for expansion at all velocities, while its one-piece core does not separate. The cannelure provides accurate and consistent crimping and also works with the InterLock ring to ensure the core and jacket remain locked during expansion.
Specifications:

Bullet Type	Boat Tail Spire Point
Bullet Diameter	.257
Weight	117 GR
Bullet Caliber	25 Caliber
Jacket Material	Copper
Bullet Coating
Bullet Tip Material
Core Material	Lead
Cannelure
Coefficient	.391
Sectional Density	0.253
OAL
Quantity	100
Recommended Usage